Since re- can mean not just "again" but also "back", repel means "drive back". Repel has two common adjective forms; thus, a repellent or repulsive odor may drive us into the other room.

repel verb [T] (FORCE AWAY) Add to word list to force someone or something to stop moving towards you or attacking you:

Repel definition: to drive or force back (an assailant, invader, etc.).. See examples of REPEL used in a sentence.

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Definition of repel verb in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

1. To ward off or keep away; drive back: repel insects. 2. To offer resistance to; fight against: repel an invasion. 3. To refuse to accept or submit to; reject: a company that was trying to repel a …

When a magnetic pole repels another magnetic pole, it gives out a force that pushes the other pole away. You can also say that two magnetic poles repel each other or that they repel.