starkly

The story

1. Proto-Germanic · inherited from*starkulīka“strongly; stiffly”
2. Old English · inherited fromstearclīċe“strongly; stoutly; vigorously; vehemently; fiercely; strictly”
3. Middle English · inherited fromstarkli
4. English todaystarkly

From Middle English starkli, starcliche, sterkliche, stercliche, from Old English stearclīċe (“strongly; stoutly; vigorously; vehemently; fiercely; strictly”), from Proto-Germanic *starkulīka (“strongly; stiffly”), from *starkulīkaz (“strong; rigid”), from *starkuz (“strong; stiff; stark”), equivalent to stark + -ly.