entirely
adv.-
1 completely (adv.) B2 Upper Intermediatecompletely or 100%; used to show that something is true in every way.
to the full or entire extent; used as a maximizer to indicate total completion or absolute degree.
ExampleI am not entirely sure if the shop is still open at this hour.
ExampleThe success of the project depends entirely on the team's ability to coordinate their efforts across different time zones.
UsageUsually placed before an adjective or a verb to emphasize a total state.
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2 solely (adv.) C1 Advanced Formalonly or purely; used when there is nothing else involved.
to the exclusion of others; used to indicate that a situation or cause is restricted to a single factor.
ExampleThe book is entirely about her life growing up in a small village.
ExampleThe committee's decision was based entirely on the financial reports, disregarding the social implications of the proposed cuts.
UsageOften used in formal contexts to isolate a single cause or reason.
From Middle English entyerly, entierly, enterely, entyreliche, equivalent to entire + -ly.