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To "stock up" on something (in a sense of buying a large amount of something)
could 買い込む be used? Or is there another way to say this, like ストックする？

I feel that both can be used, depending on the formality level (in which
ストックする would be the most informal ofc.)

**パーティーに飲み物を買い込むつもりだ**
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2017-06-08T04:30:15.283
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2017-06-09T07:13:13.830
2017-06-08T05:07:53.610
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question
word-choice loanwords
買い込む - Stock up drinks for the party
> (1) パーティー **に** 飲み物を買い込むつもりだ

I think this expression needs some examinations.  
Since に in パーティ **に** has various functions, the sentence (1) is interpreted
in many ways that are shown as follows by the person who hears it whether the
interpretation is natural or not.

> (2) パーティー **のために** 飲み物を買い込むつもりだ  
>  (2)' パーティー **のための** 飲み物を買い込むつもりだ  
>  _I'm going to stock up on beverages for the party._  
>  (3) パーティー **に備えて** 飲み物を買い込むつもりだ  
>  _I'm going to stock up on beverages to prepare for the party._
>
> (4) パーティー **会場に** 飲み物を買い込むつもりだ  
>  _I'm going to stock up on beverages and carry them into the party venue._  
>  (5) パーティー **の日に** 飲み物を買い込むつもりだ  
>  _I'm going to stock up on beverages on the day of the party._  
>  (6) パーティー **を機会に** 飲み物を買い込むつもりだ  
>  _I'm going to stock up on beverages taking advantage of the party._

If your intention is "I'm going to stock up on beverages for the party" and
everyone in the conversation knows the party, the sentence (1) is simple and
enough to express the meaning of (2), (2)' or (3).

Aside from this condition, the sentence (1) is so ambiguous that I would
recommend you to use the sentence (2)-(7) instead depending on your intention.

If your intention is "I'm going to stock up on beverages for the party", I
would recommend you to use sentence (7) rather than to use sentence (2) or
(2)', though the sentence (7) has a meaning of "I'm going to stock up on
beverages **_served_** for the party", because sentence (7) is simpler than
sentence (2) or (2)'.

> (7) パーティー **の** 飲み物を買い込むつもりだ

Anyway, you could use 買い込む for to "stock up" on something (in a sense of
buying a large amount of something).

> Or is there another way to say this, like ストックする？

Yes, there is.  
When you stock up on daily foods or something, you say like 買い **だめ** する.  
In this case, you buy a large amount of something at a time when it is cheap,
and you would consume it gradually for a long time.  
During the long time, the something is kept being stocked, so **だめ** , which
is the euphonic change-form from **ため** that means to stock, in **買いだめする** is
effective to depict the state of being stocked.

As for the difference between 買い込む and 買いだめする, the former phrase is paid
attention only at the time of buying something, on the other hand, 買いだめする is
paid attention during all the time when something is being stocked.

At the party you usually consume all things that you stocked up on at a time.
So パーティーの飲み物を買い込むつもりだ and パーティーの飲み物を買いだめするつもりだ are both natural. But in the
case you stock up on daily foods or something, 食料品{しょくりょうひん} _groceries_
を買いだめする is more natural than 食料品を買い込む.
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answer
買っておく could also be used. The pattern Vbて-form+おく means "do something in
advance, so as to be ready", "do something in preparation", "do something in
readiness". E.g. この本を読んでおいてください "Please read this book in readiness[for next
week's class]". I think ビールを買っておく would do for "I'm going to get the beer in".

Question for native speakers: my impression is that 買い込む and 買いだめする suggest
some foresight and a certain amount of planning, where 買っておく is a bit more
spur-of-the-moment. Am I right?
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2017-06-08T10:04:43.927
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answer