butt against but·ta·gainst uncommon verb 1. lie adjacent to another or share a boundary “Canada adjoins the U.S.” “England marches with Scotland” Synonymsborderadjoinedgeabutmarchbuttbutt againstbutt on 2. collide violently with an obstacle “I ran into the telephone pole” Synonymsrun intobump intojar againstbutt againstknock against Related words Word family buttmarchabutmentabutteredgeedgingborder Broader terms hittouch Narrower terms neighbor WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.