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Taking an example 食べてあげる. This means to eat for someone else' sake (in favour
of someone else). What if I wanted to say I am sorry for eating it, it would
be wrong to say 食べてあげてごめん. Is there a word to replace あげる in this case?
Something like やがって but the person doing the action is myself (first person).
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2020-07-05T05:59:18.523
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2020-07-05T06:33:30.887
2020-07-05T06:22:53.020
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question
word-choice giving-and-receiving
あげる but in an unwelcomed manner
There is no grammar for giving negative _favor_. What you mentioned やがって (やがる)
tells negative _honorific_ , which is another category.

It is possible to use favor verbs ironically, but even if so, it only makes
sense by pretending a good will, thus 食べてあげてごめん won't work anyway.

You can only say 食べちゃってごめん (食べてしまってごめん) which lets ～てしまう connote unexpected
(and unfavorable) outcomes.
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2020-07-05T06:33:30.887
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2020-07-05T06:33:30.887
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answer