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Forever (adverb) For all time, for all eternity; for a lifetime; for an infinite amount of time. “I shall love you forever.” 
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Forever (adverb) For a very long time, a seeming eternity. “We had to wait forever to get inside.” 
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Forever (adverb) Constantly or frequently. “You are forever nagging me.” 
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Forever (noun) An extremely long time. “I haven’t seen him in forever!” 
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Forever (noun) a mythical time in the infinite future that will never come. “Sure, I’d be happy to meet with you on the 12th of forever.” 
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Forever (adjective) Permanent, lasting 
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Indefinitely (adverb) In a manner that is not definite. “an indefinitely determined fossil” 
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Indefinitely (adverb) For a long time, with no defined end. 
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Indefinitely (adverb) Forever. 
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Indefinitely (adverb) for an unlimited or unspecified period of time “talks cannot go on indefinitely” 
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Indefinitely (adverb) to an unlimited or unspecified degree or extent “an indefinitely large number of channels” 
 
					