accidentally
(adverb)
adverb
1. without advance planning
- they met accidentally
Similar word(s): circumstantially, unexpectedly
2. of a minor or subordinate nature
Similar word(s): incidentally
3. without intention; in an unintentional manner
Similar word(s): unintentionally
Sentences with accidentally as an adverb:
- He discovered penicillin largely accidentally.
- He accidentally exposed the bacteria to mold spores.