English opaque

← English ubac (doublet)

← Middle English opake (inherited)

← Middle French opaque (cognate)

← Latin opacus (derived)

→ English opacity (suffix)

→ English radiopaque (prefix)

→ English opaqueness (suffix)

→ English opaquely (suffix)

→ English nonopaque (prefix)

→ English semiopaque (prefix)

→ English ubac (doublet)

→ English unopaque (prefix)

→ Latin nubilo (link)