Dutch zestig

← Middle Dutch sestich (inherited)

← Middle Dutch tsestich (mention)

← Middle Dutch tsēventich (mention)

← Proto-Germanic *sehs tigiwiz (inherited)

← Old Dutch *sestig (inherited)

→ English sixty (cognate)

→ Dutch achtenzestig (compound)

→ Dutch zestigste (suffix)

→ Pennsylvania German sechzich (cognate)