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"reasonable" is also used as a crossword clue. If that's what you saw, the answer is often rational (8 letters).
Definitions
not excessive or extreme
Word origin
From Middle English resonable, from Old French resnable, from Classical Latin ratiōnābilis, from ratiō. By surface analysis, reason + -able. Doublet of rationable.
Used in a sentence
“The wiſdome and underſtanding of this Beaſt [the beaver], vvill almoſt conclude him a reaſonable creature: […]”
“a reasonable demand, amount, or price”
“$20 a bottle is very reasonable for a good wine at a restaurant.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Fair and sensible”10 letters
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