aplaudir
/aplauˈdiɾ/ · B2 · verb
to applaud
👏 aplaudir = a- + plaud (like 'plaudits') — the clap-sound word you already know
English 'applaud' and 'plaudit' come from the same Latin root plaudere, meaning to clap. Spanish aplaudir keeps the same shape: drop one p, add -ir. If you know 'applaud', you already know aplaudir.