ab·surd (b-sûrd, -zûrd) adj. 1. Ridiculously incongruous or unreasonable. 2. Inconsistent with reason or logic or common sense 3. Of, relating to, or manifesting the view that there is no order or value in human life or in the universe. N. The condition or state in which humans exist in a meaningless, irrational universe wherein people's lives have no purpose or meaning. [Latin absurdus, out of tune, absurd : ab-, intensive pref.; see ab-1 + surdus, deaf, muffled.]