بادِئٌ: فاعِلُ بَدَأَ initiator, originator, starter, beginner, commencer, launcher, mounter, the first (person) to do something; creator, marker, author; beginning, starting, commencing

البادِئُ ذِكْرُهُ first-mentioned, above-mentioned, aforementioned, previously mentioned, aforesaid, above, (the) said, (the) same

بادِئَ ذِي بَدْءٍ first, firstly, in the first place, first of all, to begin with, to start with, above all, before anything else

في بادِئِ الأمْر، بادِئَ الأمْر at first, in the beginning