Synonyms of 'in earnest'
▷ See earnest
1 seriouslyDictionary, resolutely, earnestly
Campaigning will begin in earnest tomorrow.
2 genuineDictionary, serious, sincere
I can never tell whether he is in earnest or not.
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dinkum (Australian , New Zealand , informal)
genuine or right
He was a fair dinkum bloke with no pretensions.
`Do you really mean it?' she asked earnestly.
Thesaurus for in earnest from the Collins English Thesaurus
If something is done or happens in earnest , it happens to a much greater extent and more seriously than before.