adjective/abasaʝaˈdoɾ/
overwhelming; deadly; deafening; domineering
“[…]entrole al misántropo una ansiedad vivísima; deseo repentino, apremiante y avasallador de vaciar de una vez todas las congojas de su alma en el pecho de un buen amigo.” — […] The misanthrope was overcome by an incredibly intense anxiety, and a sudden urgent overwhelming desire to spill all his heart's woes out to a close friend.
Etymology tree Spanish a- Spanish vasallo Spanish -ar Spanish avasallar Proto-Indo-European *-tōr Proto-Italic *-tōr Latin -tor Spanish -dor Spanish avasallador From avasallar + -dor.