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I've seen in subtitle of a tv show "ただ飲み足りないだけ"

I know there is に足りる form to mean "to be enough" but it should have been
飲むに足りない.

Is there any other grammar point I am missing?
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2019-01-28T04:19:24.350
65120
2019-01-28T05:17:18.733
15674
question
grammar
What's the grammar behind 飲み足りる?
Grammatically, it's a [_compound verb_
(複合動詞)](https://db4.ninjal.ac.jp/vvlexicon/en/). `pre-masu-form + 足りる` means
"to V enough" or "to V to one's heart's content". The following compounds are
used, although they may not be listed in all dictionaries.

  * 食べ足りる (5 hits on BCCWJ) ・ 食い足りる
  * 飲み足りる (18 hits on BCCWJ)
  * 寝足りる (6 hits on BCCWJ)
  * し足りる ・ やり足りる

These may not be very formal, but they are not particularly slangy to me,
either.

満ち足りる is another compound verb that should be listed in any dictionary.

* * *

By the way, `attributive-form + に + 足りる` means "to be worth V-ing" or "to be
good enough to V" rather than "to V enough". 飲むに足りる means "to be worth
drinking".

> 飲むに足りない日本酒  
>  _sake_ that is not worth drinking
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2019-01-28T05:17:18.733
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2019-01-28T05:17:18.733
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