English Reference
Adverb

inadvertently

adv. manner
C1 Advanced US /ˌɪnædˈvɝtəntɫi/ UK /ɪnɐdvˈɜːtəntli/ in·ad·ver·tent·ly

adv.by accident or without meaning to. You use this when you do something because you are not paying attention, not because you planned it.

adv.without intention; through a lack of attention or care. Often modifies verbs related to communication or physical actions.


SIMPLE

I inadvertently deleted the wrong file.

CONTEXTUAL

During the meeting, the manager inadvertently revealed the secret plans for the new office location.

COMPLEX

By failing to update the security software, the technician inadvertently left the entire network vulnerable to external attacks for several weeks.

Usage

Typically placed before the verb it modifies or at the end of the clause.

Pitfall
He did it inadvertentHe did it inadvertently

Learners often use the adjective form 'inadvertent' when the adverbial form is required to modify an action.

Finally followed Meta, which revealed one of its AI models had inadvertently been allowed to access the internet due to a "misconfiguration" during a third-party test .

BBC News· 6 Aug 2026

We may inadvertently strengthen rightwing arguments that care is a familial concern (by which they mean female family members should do it all for free), rather than something to be funded by government.

The Guardian· 4 Aug 2026

From inadvertent + -ly.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Level C1 · Advanced
Frequency Frequent
Updated