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There are 17 twelve-letter words containing A, E, H, L, M, R, T and Y

AMATEURISHLYamateurishly adv. In an amateurish manner; without expertise or professionalism.
AMATEURISH adv. like an amateur.
CEPHALOMETRYcephalometry n. The measurement of the head, especially in order to study growth, development, and disease.
CEPHALOMETRY n. the science of measuring the head in living individuals.
EPHEMERALITYephemerality n. (Uncountable) The state or condition of being ephemeral; transience.
ephemerality n. (Countable) Something that is ephemeral.
EPHEMERALITY n. the state of being ephemeral.
EURHYTHMICALeurhythmical adj. Harmonious.
EURHYTHMICAL adj. relating to eurhythmy, rhythmical movement or order, also EURHYTHMIC, EURYTHMIC, EURYTHMICAL.
EXOTHERMALLYexothermally adv. In an exothermal manner.
EXOTHERMAL adv. of a chemical reaction, giving out heat, also EXOTHERMIC.
GEOTHERMALLYgeothermally adv. By geothermal means, especially by means of geothermal energy.
GEOTHERMAL adv. relating to the internal heat of the earth, also GEOTHERMIC.
HAEMATOCRYALhaematocryal adj. (Zoology) cold-blooded.
HAEMATOCRYAL adj. of all animals except birds and mammals, having a body temperature that varies with the temperature of the surroundings, also HEMATOCRYAL.
HEADMASTERLYheadmasterly adj. In a manner befitting a headmaster.
HEADMASTERLY adj. like a headmaster.
HERMETICALLYhermetically adv. With a hermetic seal; so as to be airtight.
hermetically adv. In a hermetic manner; isolatedly.
HERMETICAL adv. of or relating to sorcery or alchemy, also HERMETIC.
HERMITICALLYhermitically adv. Misspelling of hermetically.
HERMITICAL adv. of or like a hermit, also HERMITIC.
HYDROTHERMALhydrothermal adj. Of, or relating to hot water.
hydrothermal adj. (Geology) Of or relating to emanations of hot water that are rich in minerals, or to the rocks formed from them.
HYDROTHERMAL adj. designating naturally hot underground water that has geological effects.
HYPERMUTABLEhypermutable adj. (Genetics) That mutates rapidly.
HYPERMUTABLE adj. excessively mutable.
HYPERTHERMALhyperthermal adj. Of, pertaining to, or causing hyperthermia.
hyperthermal n. (Geology) Any of several brief geological periods of global warming.
HYPERTHERMAL adj. suffering from hyperthermia.
ISOTHERMALLYisothermally adv. In an isothermal manner; at constant temperature.
ISOTHERMAL adv. having an equal average temperature.
METHACRYLATEmethacrylate n. (Organic chemistry) Any salt or ester of methacrylic acid, especially an ester used in the manufacture…
methacrylate n. A resin manufactured from methacrylic acid or a methacrylate.
METHACRYLATE n. a salt or ester of methacrylic acid.
NYCHTHEMERALnychthemeral adj. Lasting a nychthemeron (24 hours).
NYCHTHEMERAL adj. (Greek) of or relating to a nychthemeron or 24-hour period.
RHEUMATOLOGYrheumatology n. (Medicine) The branch of medicine specializing in arthritis and other ailments of the joints.
RHEUMATOLOGY n. the study of rheumatism.

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: 69 words
  • Scrabble in French: 4 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: 1 word


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