IPA: /ˈklʌm.zi.ər/
KK: /ˈklʌm.zi.ɚ/
More awkward or ungraceful in movement or action than someone or something else.
He felt clumsier than ever when he tripped over his own feet.
Clumsier → The word 'clumsier' is derived from 'clumsy' (from Middle English 'clumsie', meaning awkward or ungraceful) and the comparative suffix '-er' (meaning more). Thus, 'clumsier' means more awkward or ungraceful than something else.
Think of 'clumsy' as describing someone who is awkward, and when you add '-er', it means they are even more awkward than before.