Tamper
来自Big Physics
mid 16th century (in the sense ‘busy oneself to a particular end, machinate’): alteration of the verb temper.
wiktionary
tamp + -er
From Middle French temprer(“to temper, mix, meddle”). Doublet of temper.
etymonline
tamper (v.)
"meddle, interfere," 1560s, figurative use of tamper "to work in clay, etc., so as to mix it thoroughly," probably originally a variant of temper (v.), which is how it often was spelled at first. Perhaps it is a dialectal workmen's pronunciation. Related: Tampered; tampering.
tamper (n.)
"one who or that which tamps," 1864, agent noun from tamp (v.).
