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general::
Phrase(s): push (up) against someone or something
to put pressure on someone or something. • The small dog pushed up against me, wagging its tail. • Push up against the ceiling tile while I try to tack it back in place., Phrase(s): push something (up) against someone or something
to press something against someone or something. • I pushed the chair up against the door to prevent the robber from getting in. • Accidentally, I pushed the door against Donna and hurt her sore elbow.
McGrawhill's American Idioms And Phrasal Verbs