"compulsion" in the noun sense
1. compulsion, irresistible impulse
an urge to do or say something that might be better left undone or unsaid
"he felt a compulsion to babble on about the accident"
2. compulsion, obsession
an irrational motive for performing trivial or repetitive actions, even against your will
"her compulsion to wash her hands repeatedly"
3. compulsion, coercion
using force to cause something to occur
"though pressed into rugby under compulsion I began to enjoy the game"
"they didn't have to use coercion"
Source: WordNet® (An amazing lexical database of English)
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