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 There are 10 twelve-letter words containing A, B, H, L, M and U| AMPHIBIOUSLY | • amphibiously adv. In the manner of an amphibian. • amphibiously adv. In an amphibious manner.
 • AMPHIBIOUS adv. adapted for both land and water.
 |  | BLABBERMOUTH | • blabbermouth n. (Informal) A gossip. • blabbermouth n. (Informal) A person who talks excessively.
 • blabbermouth n. (Aviation) A kind of foam-dispensing nozzle used in firefighting at airports.
 |  | CHLORAMBUCIL | • chlorambucil n. A particular drug used in chemotherapy. • CHLORAMBUCIL n. an oral drug used to treat some cancers, e.g. cancer of the ovary and leukaemia.
 |  | CLUBMANSHIPS | • CLUBMANSHIP n. the state of being a clubman. |  | HIBERNACULUM | • hibernaculum n. (Zoology) The place where a hibernating animal shelters for the winter. • hibernaculum n. (Botany) A bud, case, or protective covering that a plant uses to survive the challenging environmental…
 • HIBERNACULUM n. (Latin) a shelter occupied during the winter by a dormant animal (as an insect or reptile).
 |  | HYPERMUTABLE | • hypermutable adj. (Genetics) That mutates rapidly. • HYPERMUTABLE adj. excessively mutable.
 |  | MULTICHAMBER | • multichamber adj. Composed of multiple chambers. |  | PULMOBRANCHS | • PULMOBRANCH n. a lung-book. |  | UNFATHOMABLE | • unfathomable adj. Impossible to fathom or understand. • unfathomable adj. Difficult to penetrate.
 • UNFATHOMABLE adj. not capable of being fathomed.
 |  | UNFATHOMABLY | • unfathomably adv. In an unfathomable manner; beyond understanding. • UNFATHOMABLE adv. not capable of being fathomed.
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 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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