Synonyms of 'strictly'
particularlyDictionary, only, especially
This session was strictly for the boys.
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The system we design will be especially for you.
Exclusively is used to refer to situations or activities that involve only the thing or things mentioned, and nothing else.
This is still an exclusively male domain.
Thesaurus for strictly from the Collins English Thesaurus
You use strictly to emphasize that something is of one particular type, or intended for one particular thing or person, rather than any other.