godan verb (-ru)
be on the verge of becoming; be about to turn into; be on the brink of
Describes a state or situation that is close to changing into something else, often with a nuance of imminence. The verb attaches to the continuative form (連用形) of another verb or adjective, e.g. 死になりかかる (be on the verge of death).
See also: なりかける
彼は死になりかかっている。
He is on the verge of death.
その計画は失敗になりかかっている。
The plan is on the brink of failure.