Besetting

1. (p. pr. & vb. n.) of Beset.

2. (a.) Habitually attacking, harassing, or pressing upon or about; as, a besetting sin.

Thesaurus Entries

annoying, average, backbreaking, common, crushing, current, dominant, epidemic, grueling, heavy, hefty, irksome, normal, onerous, oppressive, ordinary, painful, pandemic, plaguey, popular, predominant, predominating, prevailing, prevalent, rampant, regnant, reigning, rife, routine, ruling, running, standard, stereotyped, troublesome, trying, usual, vexatious