Emily Dickinson Lexicon

TAM'PER, v.i.

1. To meddle; to be busy; to try little experiments; as, to tamper with a disease.
2. To meddle; to have to do with without fitness or necessity. 'Tis dangerous tamp'ring with a muse. Roscommon.
3. To deal; to practice secretly. Others tampered / For Fleetwood, Desborough and Lambert. Hudibras.