glaukous is the Greek spelling, near enough
hard-cThe c of glaucous is followed by an o, which makes it hard. It is a k sound written with a c.
heard asglaukous
spelledglaucous
saidGLAW-kus
In English it is glaucous, with a c.
The Greek really was glaukos, with a kappa. The k became a c on the way through Latin, which is what happened to almost every Greek word English inherited: kentron became centre, kyklos became cycle. Glaukous is right about the sound and about a hundred generations late on the letter.
The other five