D defs.my
Entry 1 sense Webster, 1913

Besetting

· Be·set·ting · IPA /bɪsˈɛtɪŋ/
01 a. Habitually attacking, harassing, or pressing upon or about; as, a besetting sin.
  1. 1.
    Habitually attacking, harassing, or pressing upon or about; as, a besetting sin.