English Reference
Adverb

solely

adv. degree
C1 Advanced Oxford US /ˈsoʊəɫi/ UK /sˈəʊlli/ sole·ly

adv.only and not involving anyone or anything else. You use this to show that there is just one reason, person, or thing involved.

adv.exclusively or only; to the exclusion of all else.


SIMPLE

She is solely responsible for the project's success.

CONTEXTUAL

The decision was based solely on the evidence presented during the trial, ignoring any outside rumors.

COMPLEX

While the committee considered several factors, the final selection was determined solely by the candidate's previous experience in international law.

Usage

Typically placed before the adjective, adverb, or prepositional phrase it modifies; it can also follow the verb 'to be'.

Pitfall
He solely works hereHe works here solely

When modifying a verb to mean 'only', it often sounds more natural at the end of the clause or immediately before the specific detail it limits.

Usage solely attribute · solely base · solely concentrate

The trio is the first part of a planned network of 50 satellites built solely to spot wildfires while they are still small enough to stop.

The Guardian· 17 Aug 2026

Not everyone is driven solely by Trump's treatment of Canada, with some noting that the declining Canadian dollar has also made the US less affordable.

BBC News· 14 Aug 2026

Common in science writing


From Middle English soly, sooly, soolly, equivalent to sole + -ly.

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

This entry
Origin Middle English soly
Level C1 · Advanced
Frequency Common
Updated