abiertamente
/aˌbjeɾtaˈmente/ · B2 · adv
openly, aboveboard
📖🚪 abierta + -mente = open + -ly, so literally openly
Abierta is the feminine form of abierto (open), and -mente is the Spanish -ly ending (from Latin mens, mind or manner). So abiertamente is open-manner-ly: doing something with nothing hidden.