39 synonyms for meaningless such as empty, absurd, aimless, and barren. Meaningless is an adjective, and its antonyms are significant and purposeful.
Absurd, fatuous, foolish, idle, illogical, incoherent, incomprehensible, nonsensical, ridiculous, senseless, silly, unintelligible, and unmeaning.
Aimless, barren, empty, fruitless, futile, hollow, inconsequential, insignificant, insubstantial, motiveless, nugatory, of no use, pointless, profitless, purposeless, trifling, trivial, unimportant, unproductive, unprofitable, useless, vacuous, vain, valueless, and worthless.