In a way or to an extent that is arresting(adverb)
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Use "arrestingly" in a sentence
"“Although not overly handsome in a classical sense,” we read, “the forty-year-old Langdon had what his female colleagues referred to as an ‘erudite’ appeal — wisp of gray in his thick brown hair, probing blue eyes, an arrestingly deep voice, and the strong, carefree smile of a collegiate athlete.”"
"RT @bnreviewer: @MaudNewton unearths an arrestingly nasty swipe from Ambrose Bierce."
"Rickman's internal monologue is arrestingly rich – a waiter "slices into the infant conversation like a sweetly slung axe" – while also revealing him as a sad, stuffy, self-absorbed, lecherous old man, lost in a haze of bitter nostalgia and verbosity."