Etymology
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belabour (v.)

chiefly British English spelling of belabor (q.v.); for spelling, see -or. Related: Belaboured; belabouring.

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Definitions of belabour

belabour (v.)
to work at or to absurd length;
Synonyms: belabor
belabour (v.)
beat soundly;
Synonyms: belabor
belabour (v.)
attack verbally with harsh criticism;
Synonyms: belabor
From wordnet.princeton.edu