Synonyms and related words :
ache, agonize, bear in mind, bleed, breathe vengeance, cherish, chew over, con over, deliberate over, deliberate upon, digest, dwell on, dwell upon, fan the embers, fret, grieve, harbor revenge, have in mind, hold in mind, keep, keep in memory, keep in mind, keep in view, meditate upon, mope, mourn, mull over, muse on, muse over, pine, pine away, ponder over, reflect over, retain, revolve, ruminate over, run over, sorrow, take on, think over, treasure, turn over,