Trivial
Minor
Synonyms: Unimportant, inconsequential, of no/little account, of no/little importance, not worth mentioning, inessential, petty, fiddling, footling, slight, inconsiderable, paltry, meaningless, worthless, flimsy, piddling, penny-ante, nickel-and-dime, insignificant, minor, of no/little consequence, not worth bothering about, incidental, non-essential, trifling, pettifogging, small, little, negligible, nugatory, pointless, idle, insubstantial, piffling, twopenny-halfpenny, and small-bore.
Superficial
Synonyms: Frivolous, shallow, empty-headed, lightweight, silly, superficial, unthinking, feather-brained, and foolish.
Example Sentences
She ignored the trivial details entirely.
His concerns seemed trivial to others.
They argued over a trivial matter.
Trivial mistakes can cause big problems.
He dismissed it as a trivial issue.