1/0 system Crossword Clue
Looking for the answer to “1/0 system” from the Washington Post Sunday crossword of September 20, 2026? It has 6 letters. Flip the tiles one at a time, try a hint first, or look through the rest of that puzzle.
Crossword answer
WASHINGTON POST SUNDAY, SEPTEMBER 20, 2026
Tap a tile to see one letter, or show the whole answer.
BINARY is the answer to “1/0 system”. It means a combination of two things.
Hints
Three clues to the answer, gentle first. Open one at a time.
Hint 1 Meaning
A combination of two things.
Hint 2 Anagram
Its letters, scrambled: NIBYRA.
Hint 3 Another clue
It has also been clued as “Like a yes-or-no question”.
More clues from the Washington Post Sunday (September 20, 2026)
Across
- 1. Captain whom Elijah calls "Old Thunder"4 letters, starts with AAHAB
- 5. Like mil. truants4 letters, starts with AAWOL
- 9. "Laser Blast" consoles6 letters, starts with AATARIS
- 15. German form of "Alas!"3 letters, starts with AACH
- 18. Has supper5 letters, starts with DDINES
- 20. Devices on guitar necks5 letters, starts with CCAPOS
- 22. Announcement from a retailer that doesn't accept paper money6 letters, starts with NNOCASH
- 23. "Kill Bill" star Thurman3 letters, starts with UUMA
- 24. Reservoir on the San Jacinto River northeast of Texas's largest city11 letters, starts with LLAKEHOUSTON
- 26. "The Treasure of the Sierra Madre" director10 letters, starts with JJOHNHUSTON
- 28. ___ at ease (anxious)3 letters, starts with IILL
- 29. Shelters made of sticks and stones, say4 letters, starts with HHUTS
- 30. Drove (along)7 letters, starts with MMOTORED
- 32. G-string relative5 letters, starts with TTHONG
- 33. Wasted, as a chance4 letters, starts with BBLEW
- 35. Jasmine and others4 letters, starts with TTEAS
- 37. "Fair point"4 letters, starts with TTRUE
- 38. Clearance warning4 letters, starts with AASIS
- 39. Cooling units, briefly3 letters, starts with AACS
- 41. "___, Arthur, son of Uther Pendragon, from the castle of Camelot" (self-introductory line in a Monty Python film)5 letters, starts with IITISI
- 43. Like the Namib's climate4 letters, starts with AARID
- 46. Repeated chord progression, say4 letters, starts with VVAMP
- 49. Region of a country that includes its capital, Cardiff10 letters, starts with SSOUTHWALES
- 53. Sea creatures once believed to have their pods guided by a leader11 letters, starts with PPILOTWHALES
- 56. Respiratory opening7 letters, starts with NNOSTRIL
- 57. "That Girl" star Thomas5 letters, starts with MMARLO
- 59. Report of thunder?4 letters, starts with BBOOM
- 60. Age or stage of history3 letters, starts with EERA
- 61. Pan-seared tuna type3 letters, starts with AAHI
- 62. Little fiends4 letters, starts with IIMPS
- 64. Visited6 letters, starts with BBEENTO
- 66. Clumping green plants6 letters, starts with MMOSSES
- 68. Rips to shreds5 letters, starts with RRENDS
- 70. Took a part?5 letters, starts with AACTED
- 72. Sitting still6 letters, starts with AATREST
- 74. Threshold4 letters, starts with EEDGE
- 75. Biological sonar for some animals, and a hint to this puzzle's theme12 letters, starts with EECHOLOCATION
- 78. Piece of Apple tech4 letters, starts with IIPAD
- 82. 1/0 system6 letters, starts with BBINARY
- 84. Standing tall5 letters, starts with EERECT
- 85. What some say before a meal5 letters, starts with GGRACE
- 86. Expecting parents' task6 letters, starts with NNAMING
- 89. Back on land6 letters, starts with AASHORE
- 92. Umpire's call4 letters, starts with SSAFE
- 94. Big coffee server3 letters, starts with UURN
- 95. Ginger ___3 letters, starts with AALE
- 96. Hostile incursion4 letters, starts with RRAID
- 98. Nonsensical5 letters, starts with IINANE
- 100. Becomes activated, as one's spidey sense7 letters, starts with TTINGLES
- 102. Athens-based edition of a fashion magazine11 letters, starts with VVOGUEGREECE
- 105. Lubricant for a wheel shaft10 letters, starts with AAXLEGREASE
- 107. "Totally!"4 letters, starts with YYEAH
- 108. Acquire from work4 letters, starts with EEARN
- 109. Davis of "Proud"5 letters, starts with OOSSIE
- 111. New York MLB pro3 letters, starts with MMET
- 112. Vintners' vessels4 letters, starts with VVATS
- 114. "___ threaten me with a good time"4 letters, starts with DDONT
- 116. Bit of lore4 letters, starts with TTALE
- 118. Overfill4 letters, starts with SSATE
- 122. Love in Angers5 letters, starts with AAMOUR
- 124. "Is our plan a go?"7 letters, starts with AAREWEON
- 127. Darkens in the sun4 letters, starts with TTANS
- 129. Zero3 letters, starts with NNIL
- 130. Ancient empire's collapse10 letters, starts with FFALLOFROME
- 132. Freedom of movement about public and private grounds in some European countries11 letters, starts with RRIGHTTOROAM
- 135. Fangorn Forest giant3 letters, starts with EENT
- 136. Instrument one can make in the board game Luthier6 letters, starts with VVIOLIN
- 137. "Snowy" bird5 letters, starts with EEGRET
- 138. Father at a mission5 letters, starts with PPADRE
- 139. Jazzman Montgomery3 letters, starts with WWES
- 140. Hospital MDs treating patients' urgent needs6 letters, starts with EERDOCS
- 141. In this place, and the circled word spelled in the geographic places on one side of the puzzle4 letters, starts with HHERE
- 142. Pick up auditory cues, and the circled word spelled in the geographic places' homophones on the other side of the puzzle4 letters, starts with HHEAR
Down
- 1. Wing it in the theater5 letters, starts with AADLIB
- 2. Start of a group email5 letters, starts with HHIALL
- 3. Brace place, at times5 letters, starts with AANKLE
- 4. Buzzer by blossoms3 letters, starts with BBEE
- 5. Sharp5 letters, starts with AACUTE
- 6. Toast during the holidays7 letters, starts with WWASSAIL
- 7. Settle on, with "for"3 letters, starts with OOPT
- 8. Appear threateningly in the distance4 letters, starts with LLOOM
- 9. Short-necked pear5 letters, starts with AANJOU
- 10. "Extremely accurate in my case"7 letters, starts with TTOOREAL
- 11. Post-exercise woe4 letters, starts with AACHE
- 12. ___ McNally (publisher of maps)4 letters, starts with RRAND
- 13. Suffix meaning "sorta"3 letters, starts with IISH
- 14. ___ down (ceases operations)5 letters, starts with SSHUTS
- 15. Area for moving cars?9 letters, starts with AAUTOSALES
- 16. "You can't be serious"4 letters, starts with CCMON
- 17. Suspend, as a painting4 letters, starts with HHANG
- 19. "Quiet, you!"3 letters, starts with SSHH
- 21. Obnoxious brats5 letters, starts with SSNOTS
- 25. Beat in a meet7 letters, starts with OOUTSWIM
- 27. Hindu pantheon member5 letters, starts with SSHIVA
- 31. ___ Crown (rare baseball achievement)6 letters, starts with TTRIPLE
- 34. Lightbulb measure4 letters, starts with WWATT
- 36. What a florist cuts4 letters, starts with SSTEM
- 38. Some promo pros7 letters, starts with AADWOMEN
- 40. Tucker of "Rush Hour"5 letters, starts with CCHRIS
- 42. Journalist Wilkerson who won a Pulitzer in 19946 letters, starts with IISABEL
- 44. Field full of machines8 letters, starts with RROBOTICS
- 45. Figure skater Midori3 letters, starts with IITO
- 47. Paltry4 letters, starts with MMERE
- 48. Awareness campaign spots on TV4 letters, starts with PPSAS
- 49. Part of a percussive set5 letters, starts with SSNARE
- 50. ___ and aahed5 letters, starts with OOOHED
- 51. Putting to work5 letters, starts with UUSING
- 52. Peruvian herbivore6 letters, starts with AALPACA
- 54. Electron loser, maybe3 letters, starts with IION
- 55. Med. coverage groups4 letters, starts with HHMOS
- 58. Change the style of4 letters, starts with RREDO
- 63. "Breaking Bad" DEA agent Hank8 letters, starts with SSCHRADER
- 65. ___ Modern (London museum)4 letters, starts with TTATE
- 67. Mix together4 letters, starts with SSTIR
- 69. Mazar of "Younger"4 letters, starts with DDEBI
- 71. Playtime playthings4 letters, starts with TTOYS
- 73. Go for a spin?6 letters, starts with RROTATE
- 75. Participates (in)7 letters, starts with EENGAGES
- 76. "Lobby Hero" Tony nominee Michael4 letters, starts with CCERA
- 77. Play houses?6 letters, starts with AARENAS
- 79. "Rush Rush" singer Abdul5 letters, starts with PPAULA
- 80. Forest's units of area5 letters, starts with AACRES
- 81. Thickly layered5 letters, starts with DDENSE
- 83. Memo opener4 letters, starts with IINRE
- 85. Funk or punk, e.g.5 letters, starts with GGENRE
- 86. Group of SEALs4 letters, starts with NNAVY
- 87. Asphodel family plant4 letters, starts with AALOE
- 88. What the electric potential of lightning strikes may be measured in9 letters, starts with MMEGAVOLTS
- 90. Involuntary inhalation onomatopoeia3 letters, starts with HHIC
- 91. Low-scoring tie score6 letters, starts with OONEONE
- 93. You made that up!7 letters, starts with FFIGMENT
- 97. "Lyrics on Several Occasions" author Gershwin3 letters, starts with IIRA
- 99. ___ poll (survey of voters on election day)4 letters, starts with EEXIT
- 101. Procures4 letters, starts with GGETS
- 103. Ryder rival5 letters, starts with UUHAUL
- 104. Native to a region7 letters, starts with EENDEMIC
- 106. Makeup of some purses7 letters, starts with LLEATHER
- 110. Clerk's workplace5 letters, starts with SSTORE
- 113. Treasure ___ (valuable stash)5 letters, starts with TTROVE
- 115. Jesse ___ Museum (attraction honoring an Olympic track star)5 letters, starts with OOWENS
- 117. Drink that's the Italian word for "milk"5 letters, starts with LLATTE
- 119. Galvanic cell terminal5 letters, starts with AANODE
- 120. Royal accessory5 letters, starts with TTIARA
- 121. "Hare Do" hunter5 letters, starts with EELMER
- 122. Some4 letters, starts with AAFEW
- 123. Lion's locks4 letters, starts with MMANE
- 124. MLB star who wrote the children's book "Out of the Ballpark"4 letters, starts with AAROD
- 125. Chocolate-caramel candy4 letters, starts with RROLO
- 126. Close at hand4 letters, starts with NNIGH
- 128. Dip in gravy, say3 letters, starts with SSOP
- 131. Yuletide tree3 letters, starts with FFIR
- 133. PhD hopeful's test3 letters, starts with GGRE
- 134. Pep rally cheer3 letters, starts with RRAH
Fresh clues from recent puzzles
Questions
What is the answer to “1/0 system”?
BINARY, 6 letters: a combination of two things.
When was “1/0 system” last seen in a crossword?
In the Washington Post Sunday crossword of September 20, 2026.
How many letters does the answer have?
6 letters, starting with B.