accidentally
1. [ adverb ] without advance planning
Synonyms: unexpectedly circumstantially by_chance
Examples:

"they met accidentally"

Related terms: intentionally unexpected accidental unexpected accidental
2. [ adverb ] in an incidental manner
Synonyms: by_chance incidentally
Examples:

"these magnificent achievements were only incidentally influenced by Oriental models"

Related terms: incidental incidental
3. [ adverb ] without intention; in an unintentional manner
Synonyms: unintentionally
Examples:

"she hit him unintentionally"

Related terms: intentionally intentionally unintentional accidental accidental
Similar spelling:   accidental
  academically
  accidence
  accident-prone