English spelunk

← German Spelunke (cognate)

← English spelunker (back-formation)

← English cave (link)

← English spelunking (link)

← Middle English spelunke (inherited)

← Ancient Greek σπῆλυγξ (derived)

← Ancient Greek σπέος (mention)

← Latin spelunca (derived)

→ English spelunking (suffix)

→ English spelunker (suffix)

→ German Spelunke (cognate)