| 释义 | drop-off
 drop-off(drŏp′ôf′, -ŏf′)n.1.  A steep or abrupt downward slope.2.  A noticeable decrease: a drop-off in attendance.3.  A designated place where people or things can be left: "distributed 12,000 newspapers to eighty different drop-offs" (Edward Klein).drop′-off`
 n.    1.  a vertical or very steep descent.    2.  a decline; decrease:  a drop-off in sales.    3.  a place where a person or thing can be left, received, etc.  adj.    4.  of, for, or pertaining to a delivery or return of someone or something to a specified place.  [1955–60] Thesaurus
 | Noun | 1. | drop-off - a noticeable deterioration in performance or quality; "the team went into a slump"; "a gradual slack in output"; "a drop-off in attendance"; "a falloff in quality"falling off, falloff, slump, slackdecline in quality, worsening, declension, deterioration - process of changing to an inferior state |  |  | 2. |  drop-off - a steep high face of rock; "he stood on a high cliff overlooking the town"; "a steep drop"cliff, dropcrag - a steep rugged rock or cliffgeological formation, formation - (geology) the geological features of the earthprecipice - a very steep cliff |  |  | 3. |  drop-off - a change downward; "there was a decrease in his temperature as the fever subsided"; "there was a sharp drop-off in sales"decrease, lesseningalteration, change, modification - an event that occurs when something passes from one state or phase to another; "the change was intended to increase sales"; "this storm is certainly a change for the worse"; "the neighborhood had undergone few modifications since his last visit years ago"shrinkage, shrinking - process or result of becoming less or smaller; "the material lost 2 inches per yard in shrinkage"casualty - a decrease of military personnel or equipmentsinking - a slow fall or decline (as for lack of strength); "after several hours of sinking an unexpected rally rescued the market"; "he could not control the sinking of his legs"attrition - a wearing down to weaken or destroy; "a war of attrition"dwindling, dwindling away - a becoming gradually less; "there is no greater sadness that the dwindling away of a family"waning - a gradual decrease in magnitude or extent; "the waning of his enthusiasm was obvious"; "the waxing and waning of the moon" | 
 drop-offnounA usually swift downward trend, as in prices:decline, descent, dip, dive, downslide, downswing, downtrend, downturn, drop, fall, nosedive, plunge, skid, slide, slump, tumble.TranslationsIdiomsSeedrop offdrop-offRelated to drop-off: catch up, follow suit, rub off, rest on, turn up, the likes of, get caught up
 Synonyms for drop-offnoun a usually swift downward trend, as in pricesSynonymsdeclinedescentdipdivedownslidedownswingdowntrenddownturndropfallnosediveplungeskidslideslumptumble
 Synonyms for drop-offnoun a noticeable deterioration in performance or qualitySynonymsfalling offfalloffslumpslack
 Related Wordsdecline in qualityworseningdeclensiondeterioration
 noun a steep high face of rockSynonymsRelated Wordscraggeological formationformationprecipice
 noun a change downwardSynonymsRelated Wordsalterationchangemodificationshrinkageshrinkingcasualtysinkingattritiondwindlingdwindling awaywaning
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