Certain sib
The crossword clue "Certain sib" is answered by SIS, a 3-letter entry. Used 62 times across 20 distinct years; most recently in 2026. It appears in 20 publications in the xd corpus. Every figure on this page comes from the collection data itself.
The answer
SIS
3 letters. See every clue for this answer on the SIS answer page.
Used 62 times across 20 distinct years; most recently in 2026. It appears in 20 publications in the xd corpus. Frequency and last-seen figures come from the xd crossword corpus only.
Other answers for this clue
The same clue has also been answered these ways in the xd corpus. Answers inside this collection link to their own answer page.
Other clues for SIS
Every other clue in this collection answered by SIS, most used first.
- Bro's sibling - used 136 times, most recently in 2026
- Bro's sib - used 130 times, most recently in 2026
- Bro's kin - used 65 times, most recently in 2025
- Member of the fam - used 64 times, most recently in 2026
- Bro's counterpart - used 59 times, most recently in 2026
- "___ boom bah!" - used 55 times, most recently in 2026
Related clues
Clues in this collection of the same answer length that share a word with this clue, or match its answer pattern when no word is shared. Most used first.
- Sis's sib - BRO, used 54 times
- Certain Ivy Leaguer - ELI, used 49 times
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