Not irr.
The crossword clue "Not irr." is answered by STD, a 3-letter entry. Used 7 times across 7 distinct years; most recently in 2019; first recorded in 2003. It appears in 3 publications in the xd corpus. Every figure on this page comes from the collection data itself, never from a guess.
The answer
STD
3 letters. See every clue for this answer on the STD answer page.
Used 7 times across 7 distinct years; most recently in 2019; first recorded in 2003. It appears in 3 publications in the xd corpus. Frequency and last-seen figures come from the xd crossword corpus only.
Other clues for STD
Every other clue in this collection answered by STD, most used first.
- Avg. - used 33 times, most recently in 2026
- Part of EST - used 18 times, most recently in 2026
- Norm, for short - used 12 times, most recently in 2026
- Reg. - used 12 times, most recently in 2025
- Norm - used 8 times, most recently in 2023
- Part of CST - used 6 times, most recently in 2012
- Part of PST - used 6 times, most recently in 2025
- Pt. of SOP - used 6 times, most recently in 2010
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.
- Not 'neath - OER, used 186 times
- Not many - FEW, used 155 times
- And not - NOR, used 104 times
- Not well - ILL, used 100 times
- Not neg. - POS, used 99 times
- Not at home - OUT, used 95 times
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