accidentally

If something happens accidentally, it didn't happen on purpose — blame it on a mistake, chance, or outside forces.

There are things you mean to do, like brushing your hair or buttoning your shirt. Then there are things you do accidentally: you didn't mean for them to happen, but they happened anyway. Just about all spilled milk happens accidentally. If a surgeon leaves a scalpel in a patient, let's hope he did it accidentally. And if a football bounces off a defender into the running back's arms and he scores a touchdown, he made a great play — accidentally.

Definitions of accidentally
1

adv without intention; in an unintentional manner

Synonyms:
unintentionally
Antonyms:
advisedly, by choice, by design, deliberately, designedly, intentionally, on purpose, purposely
with intention; in an intentional manner

adv without advance planning

“they met accidentally
Synonyms:
by chance, circumstantially, unexpectedly
Antonyms:
advisedly, by choice, by design, deliberately, designedly, intentionally, on purpose, purposely
with intention; in an intentional manner

adv of a minor or subordinate nature

Synonyms:
incidentally

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