Spanish terco

← Catalan enterch (cognate)

← Proto-Celtic *terkos (derived)

← Welsh taerc (cognate)

← Spanish entercar (mention)

← Spanish entercarse (mention)

← Spanish *enternegar (mention)

← Irish tearc (cognate)

← Italian tirchio (cognate)

← Italian pirchio (compound)

← Italian tirato (compound)

← Latin internecō (derived)

← Latin internecō (mention)

→ Spanish terquedad (suffix)

→ Spanish tercamente (affix)

→ Spanish entercarse (affix)