crying (adj.)

late 14c., "roaring, shouting;" 1590s, "wailing, weeping," present-participle adjective from cry (v.). Sense of "demanding attention or remedy" is from c. 1600. U.S. colloquial expression of disgust, impatience, etc., for crying out loud, is by 1921, probably a euphemism for for Christ's sake.

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Definitions of crying from WordNet
crying (adj.)
conspicuously and outrageously bad or reprehensible;
a crying shame
Synonyms: egregious / flagrant / glaring / gross / rank
crying (adj.)
demanding attention; "regarded literary questions as exigent and momentous"- H.L.Mencken;
a crying need
Synonyms: clamant / exigent / insistent / instant
crying (n.)
the process of shedding tears (usually accompanied by sobs or other inarticulate sounds);
I hate to hear the crying of a child
Synonyms: weeping / tears