Using がる turns adjectives into verbs and adds a "appears to" meaning. For
example:

嫌がる (na-adjective)

美味しがる (i-adjective)

Is there ever any point (from a usage perspective) in turning adjectives into
verbs?
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conjugations
Turning adjectives into verbs
You might think 田中さんはケーキを食べたい means Mr. Tanaka wants to eat cake but this is
wrong. You use the たい-form for expressing your own desire only. In such cases,
you use ～がる.

Refer for further reading:
<http://maggiesensei.com/2013/01/15/%e3%80%9c%e3%81%9f%e3%81%84%ef%bc%86%e3%81%8c%e3%82%8b-tai-
garu-and-%e3%80%9c%e3%81%8c%e3%82%8agari/>
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> 美味しがる (i-adjective)

I've never heard おいしがる, I think people would usually say something like
おいしそうに食べる or something. But [it seems to
exist](http://www.kt.rim.or.jp/~naoyom/iretrvl.html):

> 何でこんなものをイギリス人は美味しがって食べるのか。理解に苦しむ。

.

> Is there ever any point (from a usage perspective) in turning adjectives
> into verbs?

Yes, the point of 嫌がる is to talk about another person's reaction to something.
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`~がる` has specific limitations on how it can be used. It is not correct to say
it simply 'turns an adjective into a verb' since it only does so under very
particular conditions. It can also be used with other verbs.

`~がる` is an auxiliary verb which is used to indicate that a person other than
speaker appears to (want, do) something. It is often used as a replacement for
instances in which the speaker might use ～たい or ～ほしい. Since you can't really
know what someone else is thinking, using `~がる` is a way of ascribing a
psychological state to that person based on some kind of overt or apparent
behavioural clue. For example,

> トムはビールを飲みたがっている。Tom wants to drink beer (= Tom appears to want to drink
> beer).

> その男の子が眠たがっている。That boy wants to sleep (= That boy appears to want to sleep).

> お父さんは新しい車を欲しがっている。 My father wants a new car ( = My father appears to want a
> new car).
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2020-08-04T13:09:25.577
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