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squeaky (adj.)
[squeaky 词源字典]
1823, from
squeak
(n.) +
-y
(2).
Squeaky clean
in figurative sense is from 1972, probably from advertisements for dishwashing liquid. Related:
Squeakily
;
squeakiness
.
[squeaky etymology, squeaky origin, 英语词源]
[squeaky 词源字典]