filamentously

Etymology tree Proto-Indo-European *gʷʰiH-(s-)lo-der. Proto-Italic *fī(s)lom Latin fīlum Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-yéti Proto-Indo-European *-eh₂yéti Proto-Italic *-āō Latin -ō Late Latin fīlō Proto-Indo-European *-mn̥ Proto-Indo-European *-mn̥tom Proto-Italic *-məntom Latin -mentum Medieval Latin fīlāmentumbor. English filament Proto-Indo-European *h₃ed-der. Latin -ōsus Old French -usbor. Middle English -ous English -ous English filamentous Proto-Indo-European *leyg- Proto-Germanic *līkąder. Proto-Germanic *-līkaz Proto-Germanic *-ê Proto-Germanic *-līkê Old English -līċe Middle English -ly English -ly English filamentously From filamentous + -ly.

来源：wiktionary