Inclined to make clamour; noisy, loud, and insistent in a bothersome way.
From 'clamour' plus the suffix '-some' (tending to, characterized by). The '-some' suffix appears in Old English adjectives (awesome, fearsome) and creates descriptors of habitual qualities.
The suffix '-some' is a linguistic time capsule—it's Old English ancestry means 'clamoursome' feels slightly archaic and poetic compared to modern 'clamorous,' even though they mean nearly the same thing.
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