adjective
a word that describes or modifies a noun or pronoun, in this case 'unremarkable' describes something that is not worthy of attention or notice
The results of the experiment were deemed unremarkable by the research team.
The movie we watched last night was pretty unremarkable, nothing special.
That new restaurant everyone's been talking about? It was totally unremarkable, not worth the hype.
His speech was unremarkable, like a dull gray cloud in a clear blue sky.