Antonyms of conserve:
blow, squander, waste, clean, consume, deplete, drain, exhaust, expend, impoverish, spend, use up, dissipate, fritter, lavish, misspend, run through, throw away, disregard, ignore, neglect, break, damage, destroy, harm, hurt, impair, injure, ruin, wreck.
Examples of usage:
  1. But all of us can conserve energy- every one of us, every day of our lives.
    "State of the Union Addresses of Jimmy Carter", Jimmy Carter.
  2. Mere creeds will never conserve the truth.
    "Love's Final Victory", Horatio.
  3. It is owing to the careful, accurate, and critical work of continental and Irish scholars on the manuscript materials of Irish Law, History, Bardic Tales, and Poetry; on customs, dress, furniture, architecture, ornament, on hunting and sailing; on the manners of men and women in war and peace, that the modern re- teller of the Irish tales is enabled to conserve the Irish atmosphere.
    "The High Deeds of Finn and other Bardic Romances of Ancient Ireland", T. W. Rolleston.