Meaning of “eccentric” - Learner’s Dictionary

eccentric

adjective us uk /ɪkˈsentrɪk/

behaving in a strange and unusual way:

an eccentric professor
eccentric behaviour
eccentrically adverb
eccentricity noun [ U ] us uk /ˌeksenˈtrɪsəti/

eccentric behaviour

(Definition of “eccentric adjective” from the Cambridge Learner’s Dictionary © Cambridge University Press)