单词	ultraefficient
释义	ultraefficient adjective ul·​tra·​ef·​fi·​cient ˌəl-trə-i-ˈfi-shənt  : producing desired effects with very little or no waste an ultraefficient engine Word History First Known Use 1890, in the meaning defined above ultraefficient adjective as in efficient Synonyms & Similar Words Relevance efficient adequate hyperefficient capable operative effective efficacious competent effectual fruitful experienced veteran proficient productive adept virtuoso skilled killer expert skillful dynamic valid masterly accomplished practised striking practiced convincing cogent sound active practical feasible telling potent consummate working versed useful usable useable applicable workable functional realizable practicable Antonyms & Near Antonyms ineffective inefficient useless ineffectual incapable inoperative counterproductive unproductive fruitless incompetent vain unskilled abortive futile unfruitful unqualified unsuccessful inexperienced empty worthless hollow idle unprofitable pointless unskillful inoperative bootless inexpert unavailing unseasoned See More
随便看	bakul bakula Bakunin Bakuninism Bakuninist bakunist bakupari bakuri bakuris bakus bakwanga bal bal masqué bal musette bal-check valve Bala Balaam balabatim balabos balabosta balaclava balaclavas baladine Balaena balaenae

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