How many points is ETIQUETTE worth in Scrabble?

ETIQUETTE is worth 18 points in Scrabble.

Is ETIQUETTE a valid Scrabble word? Yes — 18 points

Yes, ETIQUETTE is a valid Scrabble word worth 18 points.

Yes, ETIQUETTE is a valid Words With Friends word worth 19 points.

ETIQUETTE is a valid Scrabble US/CAN word worth 18 points:

E₁T₁I₁Q₁₀U₁E₁T₁T₁E₁

ETIQUETTE is valid in Scrabble UK (World) —

E₁T₁I₁Q₁₀U₁E₁T₁T₁E₁

ETIQUETTE is a valid Words With Friends word worth 19 points:

E₁T₁I₁Q₁₀U₂E₁T₁T₁E₁

You can make 23 words from etiquette according to the Scrabble US and Canada dictionary.