embitter (v.)
- acerbate
- afflict
- aggravate
- aggrieve
- alienate
- amplify
- anguish
- annoy
- antagonize
- arouse
- augment
- bitter
- bristle
- chafe
- crush
- damage
- deepen
- desolate
- deteriorate
- dilapidate
- enhance
- enlarge
- envenom
- estrange
- exacerbate
- exasperate
- fret
- grieve
- harm
- heighten
- huff
- hurt
- impair
- incense
- increase
- inflame
- infuriate
- injure
- intensify
- inundate
- irritate
- madden
- magnify
- miff
- nettle
- oppress
- overwhelm
- peeve
- pique
- prostrate
- provoke
- rankle
- rile
- roil
- ruffle
- sharpen
- sorrow
- sour
- torment
- vex
- weaken
- worsen
