Trivial
Part of speech: adjective
Definition: Of little significance or value. Common, ordinary. Concerned with or involving trivia. Relating to or designating the name of a species; specific as opposed to generic. Of, relating to, or being the simplest possible case. Self-evident. pertaining to the trivium
Example sentence: Some of the most important determinants of life paths arise through the most trivial of circumstances.
Niggling
Part of speech: verb
Definition: To trifle with; to deceive; to mock.