Definition of bum-sucking in English:

bum-sucking

Line breaks: bum-sucking

noun

[mass noun] British vulgar slang
Obsequious, servile behaviour.

Derivatives

bum-sucker

noun

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Word of the day anomalous
Pronunciation: əˈnɒm(ə)ləs
adjective
deviating from what is standard, normal, or expected