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There are 20 fifteen-letter words containing 2A, B, N, O, 2S and U

ACCOUNTABLENESSaccountableness n. The quality or state of being accountable; accountability.
ACCOUNTABLENESS n. accountability.
ATRABILIOUSNESSatrabiliousness n. The state or quality of being atrabilious.
ATRABILIOUSNESS n. (archaic) the state of being atrabilious, melancholy or morose.
BARBAROUSNESSESbarbarousnesses n. Plural of barbarousness.
BARBAROUSNESS n. the state of being barbarous.
BIOACOUSTICIANSbioacousticians n. Plural of bioacoustician.
BIOASTRONAUTICSbioastronautics n. The study of the biological, behavioural and medical aspects of astronautics.
BIOASTRONAUTICS n. the science dealing with the effects of travel in space on living organisms.
CONSUBSTANTIATEconsubstantiate adj. Partaking of the same substance; consubstantial.
consubstantiate v. (Intransitive) To profess or believe the doctrine of consubstantiation.
consubstantiate v. (Transitive) To cause to unite, or to regard as united, in one common substance or nature.
DISAMBIGUATIONSdisambiguations n. Plural of disambiguation.
DISAMBIGUATION n. the establishment of a single semantic or grammatical interpretation.
IMMUNOASSAYABLEimmunoassayable adj. Suitable for immunoassay.
IMMUNOASSAYABLE adj. capable of undergoing immunoassay.
SESQUICARBONATEsesquicarbonate n. (Inorganic chemistry) A chemical compound containing three carbonate ions for every two metal ions.
sesquicarbonate n. (Inorganic chemistry) A chemical compound containing one carbonate and one bicarbonate ion in each formula…
SESQUICARBONATE n. a salt that is neither a simple normal carbonate nor a simple bicarbonate but often a combination of the two.
SOMNAMBULATIONSsomnambulations n. Plural of somnambulation.
SOMNAMBULATION n. sleepwalking.
SUBAGGREGATIONSSUBAGGREGATION n. a partial aggregation.
SUBALTERNATIONSsubalternations n. Plural of subalternation.
SUBALTERNATION n. the relation between a universal and particular of the same quality.
SUBASSOCIATIONSsubassociations n. Plural of subassociation.
SUBASSOCIATION n. a subordinate association.
SUBORGANISATIONSUBORGANISATION n. a subsidiary part of an organisation, also SUBORGANIZATION.
SUBSTANTIATIONSsubstantiations n. Plural of substantiation.
SUBSTANTIATION n. the act of substantiating.
SUBURBANISATIONsuburbanisation n. Alternative form of suburbanization.
SUBURBANISATION n. the act of suburbanising, also SUBURBANIZATION.
SUBVOCALISATIONSUBVOCALISATION n. the act of inaudibly articulating speech with the speech organs, also SUBVOCALIZATION.
TABULARISATIONStabularisations n. Plural of tabularisation.
TABULARISATION n. the process of tabularising, also TABULARIZATION.
UNAVOIDABLENESSunavoidableness n. Unavoidability.
UNAVOIDABLENESS n. the state of being unavoidable.
UNFAVORABLENESSunfavorableness n. The quality of being unfavorable.
UNFAVORABLENESS n. the state of being unfavorable.

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: 83 words
  • Scrabble in French: 49 words
  • Scrabble in Spanish: 108 words
  • Scrabble in Italian: 8 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 14 words


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