afflict, agonize, annoy, beset, bite, border-line, borderline, bother, bowl, bug, clash, consume, core, digest,
edge, etch, exasperate, fret, gnaw, harass, hassle, heckle, itch, lacerate, molest, mortify, nag, nibble, pester, rankle, roll, tantalize, torment, trundle, vex, wheel, whet, worry, wrack