Text: 1 to decline gradually from a standard level<Susie's grades slipped somewhat after she joined five after-school activities>SynonymssagRelated Wordsdrop, fall, slump; flag, sink, slacken, slow (down), weaken; abate, contract, decrease, de-escalate, die (down), diminish, dwindle, ebb, lessen, let up, lower, moderate, recede, relent, shrink, subside, taper, taper off, waneNear Antonymsrocket, shoot (up), soar; balloon, burgeon, enlarge, escalate, expand, increase, mount, multiply, mushroom, proliferate, snowball, swell, wax; crest, peak, surge 2 to go down from an upright position suddenly and involuntarily<be careful not to slip on the spilled oil>— see fall 1 3 to introduce in a gradual, secret, or clever way<casually slipped it into the conversation>— see insinuate 4 to move about in a sly or secret manner<slipped behind the cover of the trees>— see sneak 1 5 to move or proceed smoothly and readily<jumped into the car and slipped behind the wheel>— see flow 2

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