noun
this point; now; this late in the game
Almost always used in the set phrase この期に及んで (at this late hour/stage), expressing that it is too late to change course or that something should have been done earlier.
See also: この期に及んで
この期に及んで、まだ迷っているのか。
Are you still hesitating at this late stage?
この期に及んで言い訳は通用しない。
Excuses won't work at this point.
今更 also means 'now (after it's too late)', but is an adverb and can be used more broadly. この期 is a noun and almost exclusively appears in the phrase この期に及んで.
Compound of この (this) and 期 (time, period, stage). The reading ご for 期 is an older Sino-Japanese reading (呉音).