что не дюж meaning in English

in for a penny, in for a pound▼(Expressing recognition that one must, having started something, see it through to its end, rather than stopping short thereof)
[UK: ɪn fɔː(r) ə ˈpe.ni ɪn fɔː(r) ə paʊnd] [US: ɪn ˈfɔːr ə ˈpe.ni ɪn ˈfɔːr ə ˈpaʊnd]