unimportant
un-im-por-tant
adjective
Of little or no significance, value, or consequence; not important.
"That detail is quite unimportant."
Thesaurus
Synonyms: potty, footling, inconsequent, inconsequential, piddling, trivial, petty, fiddling, lightweight, immaterial, nickel-and-dime, piffling
Antonyms: important, of import, significant