invalidating

[in-val-i-deyt]

verb (used with object), -dat·ed, -dat·ing.

to render invalid; discredit.

to deprive of legal force or efficacy; nullify.

Origin:
1640–50; invalid² + -ate¹

Related forms

in·val·i·da·tion, noun

in·val·i·da·tor, noun

Synonyms
1. weaken, impair; disprove, refute, rebut.

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Invalidating is always a great word to know.

So is lollapalooza. Does it mean:

an extraordinary or unusual thing, person, or event; an exceptional example or instance.

a gadget; dingus; thingumbob.

WordNet

invalidating
adjective
establishing as invalid or untrue [syn: disconfirming]

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