halfway UK /hɑːfˈweɪ/US /ˌhæfˈweɪ/adverb 2adjective 1phrases 2 adverb2 •at or to the point in the middle between the start and the endI was already halfway home when I missed my keyring.One day has gone by and she's already halfway through the book. •Moderately; somewhat. adjective1 •Middle; midway; being in the middle of the way or distance.John blacked out at the halfway point of the marathon. Phrases with halfway halfway decentNo more than adequate. meet halfwayTo compromise; to achieve a mutual accommodation.