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There are 6 twelve-letter words containing NAPHTH

NAPHTHALENES	• naphthalenes n. Plural of naphthalene. • NAPHTHALENE n. a crystalline aromatic hydrocarbon usually obtained by distillation of coal tar.
NAPHTHALINES	• naphthalines n. Plural of naphthaline. • NAPHTHALINE n. a white crystalline volatile solid with a characteristic penetrating odour, an aromatic hydrocarbon, also NAPHTHALIN.
NAPHTHALISED	• naphthalised v. Simple past tense and past participle of naphthalise. • NAPHTHALISE v. to treat with naphtha, also NAPHTHALIZE.
NAPHTHALISES	• naphthalises v. Third-person singular simple present indicative form of naphthalise. • NAPHTHALISE v. to treat with naphtha, also NAPHTHALIZE.
NAPHTHALIZED	• naphthalized v. Simple past tense and past participle of naphthalize. • NAPHTHALIZE v. to treat with naphtha, also NAPHTHALISE.
NAPHTHALIZES	• naphthalizes v. Third-person singular simple present indicative form of naphthalize. • NAPHTHALIZE v. to treat with naphtha, also NAPHTHALISE.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

See this list for:

English Wiktionary: 22 words
Scrabble in French: no word
Scrabble in Spanish: no word
Scrabble in Italian: no word
Scrabble in German: no word
Scrabble in Romanian: no word

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