self-con·scious • adj. feeling undue awareness of oneself, one's appearance, or one's actions: I feel a bit self-conscious parking my scruffy old car a self-conscious laugh. ∎ Philos. & Psychol. having knowledge of one's own existence, esp. the knowledge of oneself as a conscious being. ∎ (esp. of an action or intention) deliberate and with full awareness, esp. affectedly so: her self-conscious identification with the upper classes.DERIVATIVES: self-con·scious·ly adv.self-con·scious·ness n.