adj.
1.(sometimes followed by `to') minor or casual or subordinate in significance or nature or occurring as a chance concomitant or consequence
2.following as a consequence
3.not of prime or central importance incidental n.
1.(frequently plural) an expense not budgeted or not specified
2.an item that is incidental
Idiom of the Day
at random
without sequence or order
The members of the team were chosen at random from among the regular players.