mindmap root((PEL)) compel 1、 To force （someone） to do something.
2、 To make （something） happen.
🌱After returning from the lecture, they felt compelled to contribute to one of the refugee relief agencies. 🌳The prefix *com-* acts as a strengthener in this word; thus, to compel is to drive powerfully, or force. So you may feel compelled to speak to a friend about his drinking, or compelled to reveal a secret in order to prevent something from happening. A *compulsion* is usually a powerful inner urge; a *compulsive* shopper or a compulsive gambler usually can't hold onto money for long. You might not want to do something unless there's a *compelling* reason; however, a compelling film is simply one that seems serious and important. expel 1、 To drive or force out.
2、 To force to leave, usually by official action.
🌱For repeatedly ignoring important agreements over several years, the two countries were eventually expelled from the trade organization. 🌳To expel is to drive out, and its usual noun is *expulsion*. *Expel* is similar to *eject*, but *expel* suggests pushing out while *eject* suggests throwing out. Also, ejecting may only be temporary: the player ejected from a game may be back tomorrow, but the student expelled from school is probably out forever. impel To urge or drive forward by strong moral force.
🌱As the meeting wore on without any real progress being made, she felt impelled to stand and speak. 🌳*Impel* is very similar in meaning to *compel*, and often a perfect synonym, though it tends to suggest even more strongly an inner drive to do something and a greater urgency to act, especially for moral reasons. But when *impel* takes its noun and adjective forms, it changes slightly. So an *impulse*—such as "impulse buying," when you suddenly see something cool and know you've got to have it—often isn't based on anything very serious. And *impulsive* behavior in general, such as blurting out something stupid on the spur of the moment, is the kind of thing you're supposed to get over when you grow up. repel 1、 To keep （something） out or away.
2、 To drive back.
🌱Her son, knowing how she was repelled by rats and snakes, had started keeping them in his bedroom. 🌳Since *re-* can mean not just "again" but also "back" （See RE-,） *repel* means "drive back." *Repel* has two common adjective forms; thus, a *repellent* or *repulsive* odor may drive us into the other room. Its main noun form is *repulsion*.Magnets exhibit both attraction and repulsion, and the goal of an armed defense is the repulsion of an enemy; but we generally use *repulsion* to mean "strong dislike." In recent years, *repulse* has been increasingly used as a synonym for *repel* （"That guy repulses me".