[ faw-ling-out ]
/ ˈfɔ lɪŋˈaʊt /

noun, plural fall·ings-out, fall·ing-outs.

a quarrel or estrangement between persons formerly in close association with one another.

Origin of falling-out

1560–70; nominalization of verb phrase fall out; see -ing1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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