IPA: /ˈkwɔr.əl.sə.məs/
KK: /ˈkwɔrəlzəməs/
The characteristic of being inclined to argue or fight.
His quarrelsomeness often led to conflicts with his friends.
Quarrelsomeness → It is formed from "quarrel" (from Old French *quarrel*, meaning a dispute or argument) and the suffix "-some" (meaning inclined to) combined with "-ness" (meaning the state of being). The word "quarrelsomeness" refers to the state of being inclined to engage in disputes or arguments.
Think of someone who is 'inclined' ('-some') to get into 'disputes' ('quarrel') — that's what quarrelsomeness means.
No commonly confused words.