IPA: /ʌnˈdræmətɪk/
KK: /ʌnˈdræmətɪk/
Not exciting or intense; lacking in drama or emotional impact.
The movie was quite undramatic, with a simple plot and no surprising twists.
Undramatic → It is formed from "un-" (meaning not) and "dramatic" (from Greek "dramatikos", meaning relating to drama or theatrical performance). The word "undramatic" means not relating to drama or lacking in dramatic qualities.
Think of 'not' ('un-') being added to 'dramatic', which means it describes something that is not theatrical or lacking in excitement.