English Reference
Adverb

unlawfully

adv. manner
B2 Upper Intermediate US /ənˈɫɔfəɫi/ UK /ʌnlˈɔːfəli/ un·law·ful·ly

adv.in a way that is against the law. You use this to describe actions that are illegal or not allowed by official rules.

adv.in a manner that contravenes established law or legal statutes. Often used in legal or formal contexts to describe prohibited actions.


SIMPLE

The company was accused of unlawfully sharing private data.

CONTEXTUAL

The court ruled that the evidence had been obtained unlawfully and could not be used during the trial.

COMPLEX

The investigation revealed that the former executive had unlawfully diverted millions of dollars into offshore accounts to avoid paying corporate taxes.

Usage

Typically follows the verb it modifies or appears at the end of the clause.

Pitfall
He was unlawfully of the crime.He acted unlawfully.

Unlawfully is an adverb and must modify a verb or action, not a person or state of being directly.

It is behind only a €1.2bn ($1.4bn) fine ⁠imposed on Meta by Ireland in 2023 for unlawfully transferring European Facebook users’ data to the United States.

The Guardian· 21 Aug 2026

From unlawful + -ly or un- + lawfully.

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

This entry
Level B2 · Upper Intermediate
Frequency Occasional
Updated