köken: Borrowed from Basque ezkerra, absolutive singular form of ezker (“left”). Cognate with Catalan esquerra and Portuguese esquerda. Displaced siniestra.
aile: cero a la izquierda, extrema izquierda, izquierdista
köken: From Proto-Semitic *śimaʔl-. Cognate with Hebrew שְׂמֹאל (s'mól, “left”), Akkadian 𒆏 (šumēlum, “left side”), Aramaic סְמָלָא (səmālā) / ܣܡܠܐ (semmālā, “left side”), Ugaritic 𐎌𐎎𐎀𐎍 (šmảl). The north sense derives from the left-hand side facing the sunrise, also attested in Sabaean 𐩠𐩦𐩱𐩣𐩡 (hs²ʾml, “to be northward”).
köken: From Proto-Indo-European *kep- (“to bend, curve”), a possibly dialectal combination of Proto-Indo-European *kh₂emp- (“to bend, curve”) + *(s)kamb- (“crooked”) (compare Latin cambiō (“to exchange”), whence English change), the latter (*(s)kamb-) which may be of the same origin as the former (*kh₂emp-). Cognate with Sanskrit चाप (cāpa, “bow, arc”), Sanskrit चपल (capala, “trembling, unsteady,…