reasonable

The word “reasonable” means fair and sensible; based on good judgment. In plain terms, sensible and fair, or, when describing prices, not overly expensive.

“Reasonable” is pronounced REE-zuh-nuh-buhl (/ˈɹi.zə.nə.bəl/ in IPA).

Here is “reasonable” used in a sentence: “That seems like a reasonable compromise for both sides.”

“Reasonable” is an adjective.

The word “reasonable” comes from Latin. From Old French resnable, from Latin ratiōnābilis, from ratiō ("reason") — a doublet of rationable.

“Reasonable” is a fairly common word in modern English, usually learned at around the B1 level.

“Reasonable” has 2 distinct senses listed in this dictionary. The most common is: fair and sensible; based on good judgment.

Both involve good thinking, but they differ in emphasis. "Rational" means based strictly on logic and reason, free of emotion. "Reasonable" is broader and warmer — it means fair, sensible, and moderate, taking circumstances and other people into account. A decision can be rational yet still feel unreasonable if it ignores fairness.

Generally, yes. Calling someone or something reasonable is a compliment, suggesting fairness, good sense, and balance. A reasonable price is a fair one; a reasonable person listens and compromises. It can be faint praise, though — "reasonable" quality means acceptable rather than excellent, so tone and context matter.

The main opposites are "unreasonable" and "irrational," meaning unfair, illogical, or based on poor judgment. Depending on context, antonyms include excessive, extreme, absurd, or, for prices, exorbitant. An unreasonable demand is one that ignores fairness or common sense and asks for far more than is sensible.

Agreeing to a fair compromise, listening to both sides before deciding, or setting a price that reflects true value are all reasonable. So is expecting a colleague to reply within a day rather than within minutes. Reasonable behaviour weighs the facts and treats people fairly and sensibly.