Scrunch

wiktionary

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Attested since about 1800. Probably an intensive form of crunch; ultimately derived from the onomatopoeia of a crumpling sound; or perhaps a blend of squeeze +‎ crunch.

etymonline

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scrunch (v.)

1825, "to bite," intensive form of crunch (v.); ultimately imitative. Meaning "to squeeze" is recorded from 1835 (implied in scrunched). Related: Scrunching.