Jerry doesn't like to celebrate his birthday because it compels him to ruminate about his unfulfilled life.
An example of ruminate is when you carefully contemplate an idea and give it serious thought.
intransitive verb-·nat·ed, -·nat·ing
- to chew (the cud), as a cow does
- to turn (something) over in the mind; meditate (on)
Origin of ruminatefrom Classical Latin ruminatus, past participle of ruminare: see ruminant
verbru·mi·nat·ed, ru·mi·nat·ing, ru·mi·nates
- To turn a matter over and over in the mind.
- To chew cud.
Origin of ruminateLatin rūmināre rūmināt- from rūmen rūmin- throat
(third-person singular simple present ruminates, present participle ruminating, simple past and past participle ruminated)
- (botany) Having a hard albumen penetrated by irregular channels filled with softer matter, as the nutmeg and the seeds of the North American papaw.
- a ruminate endosperm
1533, "to turn over in the mind," also "to chew cud" (1547), from Latin rÅ«minÄtus, past participle of rÅ«minÄre (“to chew the cud, turn over in the mind"), from rÅ«men (“the throat, gullet") (generally ruminis), of uncertain origin.