Efficient
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abortive, inexperienced, lazy, powerless, unqualified, inexpert, inefficient, fragile, inadequate, inept, incompetent, delicate, unable, sluggish, weak, inactive, empty, hollow, unfruitful, inoperative, useless, vain, bootless, worthless, helpless, impotent, incapable, ineffective, unseasoned, idle, unskillful, pointless, unskilled.
Top resources with antonyms for EFFICIENT:
efficient synonyms, antonyms, English dictionary, English language, definition,
see also 'efficiency',effect',effluent',effective', Reverso dictionary, English ...
producing or capable of producing a desired result <that manual lawn mower is
not a very efficient tool for doing a huge yard> Synonyms effectual, efficacious, ...
Synonyms and antonyms for efficient. 1. efficient (adj.) being effective without
wasting time or effort or expense. Synonyms: high-octane,; effective,; efficacious,
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Synonyms for efficiency at Thesaurus.com with free online thesaurus, antonyms,
and definitions. Dictionary and Word of the Day.
Synonyms for efficient at Thesaurus.com with free online thesaurus, antonyms,
and definitions. Dictionary and Word of the Day.