entered upon (verb) enter upon: start
Sinonime: aggravate, anger,
bother,
chafe, embitter, exasperate, fester,
fret, gall, get one's goat,
harass,
hurt, inflame, irk, mortify, nettle,
obsess,
pain,
pester,
plague, rile,
torment, vex
Antonime: delight, make happy, please