noun
a musical notation that makes a note sharp or flat or natural although that is not part of the key signature
adjective
happening by chance or unexpectedly or unintentionally
Synonyms
Examples
- with an inadvertent gesture she swept the vase off the table
- accidental poisoning
- an accidental shooting
adjective
not of prime or central importance
Synonyms
Examples
- nonessential to the integral meanings of poetry"- Pubs.MLA
- the character's motives remain accidental to the plot