'buckle down' definitions:

Definition of 'buckle down'

(from WordNet)

verb

Work very hard, like a slave [syn: slave, break one's back, buckle down, knuckle down]

Synonyms of 'buckle down'

From: Moby Thesaurus

be determined,
be in earnest,
be resolved,
buckle to,
cross the Rubicon,
die fighting,
die hard,
endeavor,
go all out,
go for broke,
hump,
hump it,
knuckle down,
lay to,
mean business,
never say die,
ply the oar,
spare no effort,
take the plunge

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