rankled (?.)

• acerb
• acerbate
• acerbic
• acid
• acidic
• acidulent
• acidulous
• acrimonious
• bitter
• burning
• caustic
• choleric
• embittered
• haunted
• mindful
• nagged
• obsessed
• plagued
• rancorous
• remembering
• resentful
• resenting
• sore
• splenetic
• stewing
• unable to forget
• virulent