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I know that べき means should, so what's つっこむ? And what's its infinitive?
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2017-03-19T21:53:23.027
44641
2017-03-20T09:26:45.917
20348
question
verbs
What does つっこむ べき mean?
つっこむ is a simple verb which has several meanings including "to plunge", "to
retort", "to cram". So つっこむべき means "[You] should cram", "[I] should plunge",
or whatever that corresponds to the dictionary definition.

That said, when people suddenly say つっこむべき in a conversation, it's likely to
mean "[I/You/etc should] retort / react / butt in / point out someone's error"
usually with some comedic nuance. つっこむ is recognized as a role of comedians.
See: [What does “tsukkomi” mean?](https://anime.stackexchange.com/q/6787/5094)
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2017-03-20T03:33:05.030
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2017-03-20T03:33:05.030
2017-04-13T12:54:51.837
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answer
It's not a simple verb, it's a compound verb, a construct which is very common
in Japanese.

突{つ}く - to thrust, hit, strike, ...

込{こ}む - to enter/become packed ...

Combining the verbs then gives a verb which means more like "plunge _into_ "
or "thrust something _into_ "

込む is a common suffix in these combined verbs, such as 入れ込む (put something
inside) and 飲み込む (to swallow, or more abstractly as "to take in", "to
understand").

As for the conjugation, it works the same as 込む when it's written by itself.
The "infinitive" is thus what you have already written, 突っ込む.
CC BY-SA 3.0
2017-03-20T09:26:45.917
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2017-03-20T09:26:45.917
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answer