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efficiency
noun
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How to pronounce efficiency:

Definition of efficiency:

efficiency (noun):
great skill or competence
the quality or degree of being efficient
the ratio of the output to the input of any system.

Synonyms for efficiency:

orderlinesspowerproductivityabilityeconomyratioefficacyeffectivenessorganization

Antonyms for efficiency:

sloppinessineptitudedisorderincapabilitymessinessinabilitycarelessnessdisorderlinessdisorganisationinadequacy

Other 4-syllable words like efficiency

Here are some other common words that have 4 syllables, like efficiency does.

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