As an adjective backbreaking
is (figuratively) of work, very physically tiring.
As a verb laboring is
(us).
As a noun laboring is
the act of one who labors; toil; work done.
backbreaking
English
Alternative forms
* back-breaking
Adjective
(
en adjective)
(figuratively) Of work, very physically tiring.
Derived terms
* backbreakingly
laboring
English
Alternative forms
* labouring (UK )
Verb
(head)
(US)
Noun
(
en noun)
The act of one who labors; toil; work done.