English Etymology From doublethink + -er or double + thinker. Noun doublethinker (plural doublethinkers) One who engages in doublethink. 2021 February 12, Rod Dreher, “Natan Sharansky: The Power Of Truth”, in The American Conservative:I could live with real people and enjoy real friendships, not the cautious, constricted conversations of winks and nods among fellow doublethinkers.Wikiwand - on Seamless Wikipedia browsing. On steroids.