previamente
/ˌpɾebjaˈmente/ · B2 · adv
previously (at an earlier time)
⏪ previamente = previa (prior) + -mente (-ly) → priorly, i.e. previously
Spanish builds adverbs by adding -mente to an adjective, like English -ly. Previa means prior or earlier, so previamente is literally priorly, which matches previously. Notice the shared pre- and prev- start in both languages.