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Latin quartus
← Proto-Germanic *fedurþô (cognate)
← Ancient Greek τέταρτος (cognate)
← Proto-Indo-European *kʷeturtos (derived)
← Proto-Indo-European *kʷetwóres (mention)
← Latin quadrus (mention)
← Latin Māvors (mention)
← Latin Mārs (mention)
← Sanskrit चतुर्थ (cognate)

→ English quarter (mention)
→ English quadratic (cognate)
→ English quarto (mention)
→ English quart (mention)
→ English quadroon (mention)
→ English quartine (mention)
→ English vicesimo-quarto (mention)
→ English sexagesimo-quarto (mention)
→ English quartan (mention)
→ English quartane (mention)
→ English quartation (mention)
→ English quink (cognate)
→ Asturian cuartu (derived)
→ Catalan quarter (derived)
→ Catalan quart (derived)
→ German Quartär (derived)
→ Spanish cuarto (derived)
→ French écarter (derived)
→ Galician cuarto (derived)
→ Hungarian kvartett (derived)
→ Italian quarto (mention)
→ Italian squarciare (derived)
→ Italian squartare (mention)
→ Italian quartabuono (derived)
→ Latin Quartinus (affix)
→ Ligurian quàrto (derived)
→ Translingual kartefour (mention)
→ Norwegian Bokmål kvart (derived)
→ Norwegian Nynorsk kvart (derived)
→ Norman quart (inherited)
→ Portuguese quarto (mention)
→ Romanian depărta (derived)