Антонимом highly increased

decreased diminished reduced contracted cut lower compressed curtailed depressed down lessened low trimmed clipped cropped depleted downsized dropped dwindling flat knockdown pruned receded shrunk small truncated under cut down cut short pared down scaled down stripped down less fewer smaller a reduced amount of a lesser amount of a smaller amount of not as much of subtracted lesser divided lowered abated marginal negative drained condensed spent taken down exhausted

declining diminishing decreasing dwindling abating falling lessening low disappearing fading shrinking subsiding vanishing reducing sinking

chief main noncomplementary nonreciprocal principal

short brief shortish curt little mini shortened short-lived short-term abbreviated abridged compressed condensed contracted curtailed cut lessened reduced

flat tight unswollen

decreased diminished reduced downsized lessened lowered weakened abridged curtailed decremented abated ceased shortened shrank shrunk compressed condensed contracted decelerated depleted destroyed dropped halted hindered narrowed prevented restricted slowed undermined deflated degraded demolished discouraged repressed stopped abbreviated constricted cut cut back de-escalated divided felled lost plummeted plummetted receded retrenched sank hurt minified played down razed retreated subtracted took back subtracted from went down

declined dropped fell collapsed crashed degenerated depreciated deteriorated diminished disintegrated dwindled faded failed flagged lessened receded sagged shrank shrunk descended dove plummeted plummetted slid tumbled lowered plunged relinquished sank slipped slumped toppled dived nose-dived caved in keeled over went down jumped down

lessened waned weakened attenuated lightened reduced released softened diminished mitigated tailed off thinned wound down abated abridged curtailed declined decreased de-escalated degraded died down diluted downsized drained dwindled eased eased off eroded grew less impaired let up lowered minified minimized moderated narrowed rolled back shrank shrunk slackened tapered slacked up slowed down soft-pedaled soft-pedalled tapered off minimised truncated became smaller cut back took the bite out took the edge off took the sting out

regressed diminished retrogressed weakened curtailed declined stunted devolved lessened retrograded abated arrested impaired impeded inhibited lowered mitigated repressed restricted worsened backslid backslided cramped curbed deteriorated dwindled checked debased debilitated devitalized enervated enfeebled held back hurt reversed reverted slowed down slowed up degenerated

highly infectious highly infective high-lying highly leveraged highly priced highly-processed food highly-flavoured highly favourable highly-developed highly developed highly contagious highly complimentary