19 Moby Thesaurus words for "go to bed": bed, bed down, couch, curl up, go beddy-bye, go night-night, go to rest, lie down, loll, lounge, recline, repose, rest, retire, settle to rest, snug down, sprawl, take it easy, take life easy

Source: Moby Thesaurus II by Grady Ward, 1.0
 

go to bed v : go to bed in order to sleep; "I usually turn in at midnight"; "He turns out at the crack of dawn" [syn: turn in, bed, crawl in, kip down, hit the hay, hit the sack, sack out, go to sleep, retire] [ant: get up, get up]

Source: WordNet (r) 2.0