Is this your crossword clue?
"only" is also used as a crossword clue. If that's what you saw, the answer is often exclusively (11 letters).
Definitions
No more than, solely, or without anyone or anything else.
Word origin
From Middle English oonly, only, from Old English ānlīċ, ǣnlīċ (“only; singular; solitary”), from Proto-Germanic *ainalīkaz. Cognate with obsolete Dutch eenlijk, German ähnlich (“similar”), Old Norse álíkr, Swedish enlig (“unified”). By surface analysis, on(e) + -ly.
Used in a sentence
“He is the only doctor for miles.”
“The only people in the stadium were the fans: no players, coaches, or officials.”
“He was the only male in attendance at the boyband concert.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Solely”4 letters
Not quite right?
"Search similar patterns."
O___