From Longman Dictionary of Contemporary English-ish-ish /ɪʃ/ suffix 1 [in nouns]SAN the people or language of a particular country or place Are the British unfriendly? learning to speak Turkish She’s Swedish.2 [in adjectives]SAN of a particular place Spanish food (=from Spain)3 [in adjectives]TYPICAL typical of or like a particular type of person foolish behaviour (=typical of a fool) Don’t be so childish! (=do not behave like a child) snobbish4 [in adjectives]DISAPPROVE the ending of some adjectives that show disapproval selfish5 [in adjectives]SMALL rather SYN quite youngish (=not very young, but not old either) tallish reddish hair6 [in adjectives] spokenAPPROXIMATELY approximately We’ll expect you around eightish (=at about eight o'clock). He’s fortyish (=about 40 years old).
Examples from the Corpus
-ish• childish• foolish behavior• Jewish traditions• the Amish people• the BritishOrigin -ish Old English -isc 