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There are 13 nine-letter words containing HTH

CHTHONIANchthonian adj. Pertaining to the underworld; being beneath the earth.
chthonian n. A dweller in the mythical underworld.
CHTHONIAN adj. pertaining to the earth or the underworld, also CHTHONIC.
DIPHTHONGdiphthong n. (Phonetics) A complex vowel sound that begins with the sound of one vowel and ends with the sound of…
diphthong n. (Rare) A vowel digraph or ligature.
DIPHTHONG n. a union of two vowels pronounced in one syllable.
ICHTHYOIDichthyoid adj. Characteristic of fish.
ichthyoid n. Any fish, or other vertebrate having the form of a fish.
ICHTHYOID adj. fishlike, also ICHTHYOIDAL.
ICHTHYSESichthyses n. Plural of ichthys.
ICHTHYS n. (Greek) an emblematic fish symbolizing Christ, believed to have mystical qualities.
NAPHTHENEnaphthene n. (Organic chemistry) Any cycloalkane (or alkyl derivative).
NAPHTHENE n. a peculiar hydrocarbon occurring as an ingredient of Caucasian petroleum.
NAPHTHOLSnaphthols n. Plural of naphthol.
NAPHTHOL n. any one of a series of hydroxyl derivatives of naphthalene, analogous to phenol, also NAPHTOL.
NAPHTHOUSNAPHTHOUS adj. containing naphtha.
NAPHTHYLSnaphthyls n. Plural of naphthyl.
NAPHTHYL n. a radical derived from naphthalene.
NIGHTHAWKnighthawk n. (UK, regional) A nightjar, especially Caprimulgus europaeus (Eurasian nightjar).
nighthawk n. (US) A New World nightjar of the genus Chordeiles, especially Chordeiles minor.
nighthawk n. A person whose preference or custom is to remain awake and active during the night and the early morning hours.
PHTHALATEphthalate n. (Organic chemistry) Any salt or ester of a phthalic acid.
PHTHALATE n. a salt of phthalic acid.
PHTHALEINphthalein n. (Organic chemistry) any of a range of lactones formed by the reaction of phenols with phthalic anhydride.
PHTHALEIN n. any one of a very important class of dye-yielding materials formed by the union of phenols with phthalic anhydride.
PHTHALINSphthalins n. Plural of phthalin.
PHTHALIN n. a colourless crystalline compound obtained by reducing a phthalein.
PHTHISICSphthisics n. Plural of phthisic.
PHTHISIC n. a disease of the lungs, also PHTHISIS.

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.

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See this list for:

  • English Wiktionary: 62 words
  • Scrabble in French: 2 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: 20 words
  • Scrabble in Romanian: no word


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