accidentally

(r) without advance planning
- they met accidentally
unexpectedly, by chance, circumstantially,
(r) of a minor or subordinate nature
- these magnificent achievements were only incidentally influenced by Oriental models
incidentally,
(r) without intention; in an unintentional manner
- she hit him unintentionally
unintentionally,

Synonyms

unexpectedly by chance circumstantially incidentally unintentionally

Antonyms

advisedly by choice by design deliberately designedly intentionally on purpose purposely

Words of close approximity