[thank] vt [ME, fr. OE thancian; akin to OE thanc gratitude--more at thanks] (bef. 12c) 1: to express gratitude to "~ed her for the present"--used in the phrase thank you usu. without a subject to politely express gratitude "~ you for your consideration"--used in such phrases as thank God, thank goodness usu. without a subject to express gratitude or more often only the speaker's or writer's pleasure or satisfaction in something
2: to hold responsible "had only himself to ~ for his loss" -- thank.er n