Meaning of TAMPER in English

TAMPER

intransitive verb (~ed; ~ing) see: temper Date: 1567 to carry on underhand or improper negotiations (as by bribery), 2. to interfere so as to weaken or change for the worse, to try foolish or dangerous experiments, to render something harmful or dangerous by altering its structure or composition , ~er noun ~proof adjective

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.