Readings
Kun readingうら.む、うらみ、うら.めしい Meanings
Mnemonic (RtK)
ⓘmailbox · evening · fingerprint · heart (心)
From "Remembering the Kanji" by James Heisig · Frame 1524
Additional Examples
He was known for a legend of a vengeful spirit (vindictive ghost).wiki Retired Emperor Sutoku resented this deeply.wiki Practice Writing
Practice Writing 怨
Draw with a guide, then from memory — checked at every step