Scrabble Dictionary

Check if your word is playable in Scrabble.

Yes, tetter is playable

...and is worth 6 points.

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SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)

"Tetter" Definition

noun

Chiefly Southern U.S. Any of various skin diseases, such as eczema, psoriasis, or herpes, characterized by eruptions and itching.
Any of various vesicular skin diseases (as ringworm, eczema, and herpes).