Trivial means too small and unimportant to bother with. A trivial matter, trivial detail, far from trivial.
It is dismissive, and calling somebody's concern trivial is a reliable way of causing offence. In mathematics it has a precise sense: a trivial solution is one that is technically correct and uninteresting, like zero. Non-trivial in that world means genuinely difficult. Note trivia; and that the Latin trivium is a place where three roads meet — common, public and so unremarkable.
1adjectivetrivialToo small and unimportant to bother with.
“Don't bother the manager with trivial complaints about the colour of the pens.”
synonyms: minor, insignificant
2adjectivecorrectTechnically correct and uninteresting, in mathematics.
“Setting every value to zero gives the trivial solution, which tells us nothing new.”
trivial is a quality of unimportance.
Also accepted in games: minor, petty
Practised in Sharper Adjectives