deficiently

In lacking manner

In a deficient manner—lacking what is needed or expected.

The word appears most often in technical or formal contexts: The study was deficiently designed, patients who respond deficiently to treatment.

It suggests falling short of a standard rather than complete absence.

inadequately

incompletely

Not to the end

ineffectively · faultily · suboptimally · shoddily · weakly · feebly · meagerly · scantily · sparingly · barely

substandard

inferiorly

Toward a lower position

mediocrely · unacceptably · inadequately · imperfectly · defectively · disappointingly · unsatisfactorily · dismally · weakly · feebly

unskillfully

ineptly

Lacking competence or grace

bunglingly · carelessly · haphazardly · inexpertly · maladroitly · incompetently · crudely · sloppily · fumblingly · ham-handedly

lacking

incompletely

Not to the end

emptily · needfully · underprovided · undersupplied · shortfall · gapped · neglectfully

Opposites
adequacy/sufficiency

deficientlysufficiently

To an adequate degree

adequately · satisfactorily · acceptably · passably · tolerably

abundance/quantity

deficientlyabundantly

In great quantity

amply · plentifully · copiously · generously · richly

quality of performance

deficientlyperfectly

Without any flaw

excellently · superbly · competently · proficiently · flawlessly

Phrases
Family

deficient

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Abstract · Negative · Everyday, not technical · Rated G