Question: what is the fourth letter of the greek alphabet
Answer: Letter Name Sound Ancient Modern Α α alpha , άλφα ( a ) ( aː ) Β β beta , βήτα Γ γ gamma , γάμμα ( ɡ ) , ( ŋ ) ( ɣ ) ~ ( ʝ ) , ( ŋ ) ~ ( ɲ ) Δ δ delta , δέλτα ( d ) ( ð ) Ε ε epsilon , έψιλον Ζ ζ zeta , ζήτα ( zd ) ( z ) Η η eta , ήτα ( ɛː ) ( i ) Θ θ theta , θήτα ( th ) ( θ ) Ι ι iota , ιώτα ( i ) ( iː ) ( i ) , ( ʝ ) , ( ɲ ) Κ κ kappa , κάππα ( k ) ( k ) ~ ( c ) Λ λ lambda , λάμδα ( l ) Μ μ mu , μυ ( m ) Or ( dz ) .