Key: "S:" = Show Synset (semantic) relations, "W:" = Show Word (lexical) relations
Display options for sense: (gloss) "an example sentence"
Noun
S: (n) accidental (a musical notation that makes a note sharp or flat or natural although that is not part of the key signature)
Adjective
S: (adj) accidental, inadvertent (happening by chance or unexpectedly or unintentionally) "with an inadvertent gesture she swept the vase off the table"; "accidental poisoning"; "an accidental shooting"
S: (adj) incidental, nonessential, accidental (not of prime or central importance) "nonessential to the integral meanings of poetry"- Pubs.MLA; "the character's motives remain accidental to the plot"