IPA: /ˌæpəˈθɛɡmətɪk/
KK: /əˈpɑːθəɡmætɪk/
Relating to a concise and instructive saying or maxim; often expressing a general truth in a brief and memorable way.
The speaker's apothegmatic remarks left a lasting impression on the audience.
Apothegmatic is formed from "apothegm" (from Greek "apophthegma", meaning a saying or maxim) and the suffix "-atic" (meaning pertaining to). The word describes something that is related to or characteristic of a concise and instructive saying or maxim.
Think of 'apophthegma' as a wise saying, and remember that 'apothegmatic' means related to such wise sayings.