full of or characterized by vigor: a vigorous effort.
strong; active; robust: a vigorous youngster.
energetic; forceful: vigorous steps; a vigorous personality.
powerful in action or effect: vigorous law enforcement.
growing well, as a plant.

Origin of vigorous

1300–50; Middle English < Old French < Medieval Latin vigorōsus. See vigor, -ous
Related formsvig·or·ous·ly, adverbvig·or·ous·ness, nouno·ver·vig·or·ous, adjectiveo·ver·vig·or·ous·ly, adverbo·ver·vig·or·ous·ness, nounsu·per·vig·or·ous, adjectivesu·per·vig·or·ous·ly, adverbsu·per·vig·or·ous·ness, nounun·vig·or·ous, adjectiveun·vig·or·ous·ly, adverbun·vig·or·ous·ness, noun

Synonyms for vigorous

Synonym study

2. See active.

Antonyms for vigorous

1–5. weak. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for vigorous

Contemporary Examples of vigorous

Historical Examples of vigorous

  • So vigorous was her movement that Cassidy's clasp was thrown off the wrist.

    Within the Law

    Marvin Dana

  • After Aggie's vigorous comment there followed a long silence.

    Within the Law

    Marvin Dana

  • Yes; this is what the secrets of my art have done for me to preserve me fresh and vigorous as you see.

  • The wizened little headman was as cheerful and lively and vigorous as ever.

    The Leopard Woman

    Stewart Edward White

  • He is still young and vigorous, and has it yet in his power to accomplish much.

British Dictionary definitions for vigorous



endowed with bodily or mental strength or vitality; robust
displaying, involving, characterized by, or performed with vigourvigorous growth
Derived Formsvigorously, adverbvigorousness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for vigorous

c.1300 (early 13c. as a surname), from Anglo-French vigrus, Old French vigorosus, from Latin vigere "be lively, flourish, thrive" (see vigor). Related: Vigorously.

Online Etymology Dictionary, © 2010 Douglas Harper