Where does “Earnie” come from?

Earnie (English) comes from English earnest, from English -est, from Middle English -est, from Old English -est, from Proto-Germanic -istaz, from Proto-Indo-European -istHos, from Proto-Indo-European -yōs, from Proto-Indo-European -yoss.

Ancestry of “Earnie”, step by step

Earnie traces back through two separate lines of ancestry.

via English earnest

StepLanguageWordMeaning
1EnglishearnestGravity; serious purpose; earnestness;...
2English-estUsed to form the superlative of adjectives and...
3Middle English-estUsed to form the second-person singular present...
4Old English-estsuffix forming feminine nouns, originally from...
5Proto-Germanic-istaz-est
6Proto-Indo-European-istHos
7Proto-Indo-European-yōsForms adjectives from roots, meaning "very" or...
8Proto-Indo-European-yoss

via English ie

StepLanguageWordMeaning
1EnglishieAlternative form of i.e
Every word from Proto-Indo-European -yoss
Earnie — Etymology, Origin & Word History | Etymology Explorer