Adjective gigantic has 1 sense
  1. gigantic, mammoth - so exceedingly large or extensive as to suggest a giant or mammoth; "a gigantic redwood"; "gigantic disappointment"; "a mammoth ship"; "a mammoth multinational corporation"
    Antonyms: small, little (indirect, via large, big)
    Antonyms: small, little (indirect, via large, big)
,
TOP