1.
friendliness, amiability, sociability
A pleasant, friendly manner in social interactions. The quality of being agreeable and warm toward others, often in customer service or social settings.
2.
fondness, affection, patience (with someone)
Feelings of goodwill or patience toward someone. Often used in the negative — losing patience or goodwill with someone or something.
Pronunciation
Both あいそ and あいそう are used. The あいそ reading is more colloquial; あいそう is the standard dictionary form. This entry covers the あいそ form.
Usage
In sense 1, 愛想 describes outward friendliness and sociability. 愛想がいい means "friendly" and 愛想がない means "unfriendly" or "cold."
In sense 2, 愛想が尽きる is a set expression meaning to lose patience or give up on someone — similar to English "the last straw."
Common collocations
Related Words
Related:
愛想 (alternate reading)
Related:
愛想がいい (expression form)
Compare:
社交性 (sociability)