To act secretly, or in an underhand way; to tamper.(verb)
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Use "trinkle" in a sentence
"Elementary, my dear Watson, only Fortnum and Bowser (ph) individually wrapped trinkle treats, Toughens the Tin are worth killing for."
"He heard the trinkle of water below, and was satisfied that there was a succession of canyons leading to the plain below, in which case descent would be comparatively easy."
"Teddy, who had turned to look down into the valley, now caught Jimmie by the arm and pointed downward, where a low-lying ridge jutted out of the general slope and made a small canyon between itself and the body of the mountains, a canyon in which a trinkle of water showed."