The story
- Ancient Greekκῐθᾰ́ρᾱ (kĭthắrā)
- Aramaicקיתרא (qīṯārā)
- Arabicقِيثَارَة (qīṯāra)
- Old Spanishguitarra
- Spanishguitarra
- English todayguitar
From Spanish guitarra, from Arabic قِيثَارَة (qīṯāra), from Ancient Greek κῐθᾰ́ρᾱ (kĭthắrā). Doublet of cithara, cither, and zither, but not related to sitar.
Etymology from Wiktionary, CC BY-SA 4.0.