The only free and comprehensive online etymological dictionary of the Spanish language
palabra f. (Noun) "word"
12th cent. Old Spanish parabla via metathesis. From Late Latin parabola "speech" but originally in Latin "comparison." Borrowed from Ancient Greek παραβολή (parabolé) "comparison;" "parable" (whence parábola).
Indo-European
Romance
Asturian pallabra, Portuguese parábola, Galician palabra, Catalan paraula, French palabre, Italian parabola, Romanian parabolă, Sardinian paragula