What is the opposite of rigorous?

Need antonyms for rigorous? Here's a list of opposite words from our thesaurus that you can use instead.

Adjective
Opposite of extremely thorough, accurate and careful
“After a cursory examination, the Commission told the independents late in February that it was doing nothing.”
Adjective
Opposite of requiring, or involving, great mental or physical effort
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“A fairly undemanding climb from Jelacic Plac takes one up the hill to a tangle of old lanes and a high vantage from which to look out over the lower city.”
Adjective
Opposite of strict or exacting in standards
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“At present, high scores across the board are achieved through ridiculously lenient marking standards.”
Adjective
(of weather or climate) Opposite of stormy or tempestuous
“Even in calm conditions, ice fog can form over the runway in extreme cold.”
Adjective
Opposite of severe or strict in manner or attitude
“The husband was a tall and genial fellow, friendly, youthful, and easy-going.”
Adjective
Opposite of consisting of matter all through
“Most of these applications use nitrogen in liquid form as a refrigerant.”
Adjective
Opposite of treated or regarded with a devotion and scrupulousness appropriate to worship
Adjective
Opposite of done in a systematic way, using experiments or tests
Adjective
Opposite of that cannot be changed or altered
Adjective
Opposite of harsh or severe
Adjective
Opposite of providing a faithful representation of someone or something
“One immediate point about this passage is that it is a wildly inaccurate rendition of Cyprian's original.”
Adjective
Opposite of of or according to the rules of logic or formal argument
“She gave me a wild and incoherent explanation about habitation on the planet Mars.”
Adjective
Opposite of elegant and cultured in appearance, manner, or taste
Adjective
Opposite of being alert or on top of things by paying close attention
“Some studies showed that refined sugar and food additives made children hyperactive and inattentive.”
Adjective
Opposite of characterized by severe self-discipline and abstention from all forms of indulgence
“With his love of good food, whisky, and cigars, Wingate enjoyed a sybaritic lifestyle to the full.”
Adjective
Opposite of causing physical fatigue and exhaustion
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