This word is acceptable for play in the UK dictionary that is being used in the following games:

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n. The state or quality of being blockish.

n. Stupidity; dullness: as, “incurable blockishness,”

"This was done at his return from the little paltry town, even then when Master Antitus of Cressplots was licentiated, and had passed his degrees in all dullery and blockishness, according to this sentence of the canonists, Beati Dunces, quoniam ipsi stumblaverunt."