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In 暗殺教室 chapter 3, the students try to assassinate the teacher and fail and
the teacher remarks:

> 笑顔が少々わざとらしい  
>  油断させるには足りませんね

But im a bit confused about whether 油断 here refers to the students
carelessness about hiding their true intentions ("such carelessness will not
be enoughj (to catch me)") or if it refers to the teacher's own
carelessness/unpreparedness.

I think since that the subject seems to be the students that 油断させる would then
refer to the teacher's own unpreparedness, but i'm not 100%
CC BY-SA 3.0
2015-10-21T19:17:04.283
28808
2015-10-22T00:45:01.327
3896
question
grammar
油断させる, who is being careless/unprepared?
Assuming that the listeners here are the students, the following can be said.

> 「[笑顔]{えがお}が[少々]{しょうしょう}わざとらしい。」
>
> 「[油断]{ゆだん}させるには[足]{た}りませんね。」

First, whose 笑顔 is being talked about? The students', agreed? If yes, the
phrase "your smiles" might make an appearance in the next sentence. This being
Japanese, however, its "appearance" might as well be _**invisible**_.

The next sentence 「油断させるには足りませんね。」 is a complete one though it lacks both a
subject and object. You might want to fill in the missing parts either on
paper or in your head. (Nothing is missing to the Japanese-speaking mind,
needless to say.)

> 「(Subject) + **は** + (Object) + **を** + 油断させるには足りませんね。」

「油断させる」 is causative, so the Object is the one who may or may not 「油断 **する**
」, right?

Thus, it is saying that the Subject is 足りない ("not good enough") to _**make**_
the Object 油断する ("to be off guard").

Subject: 「(Your) わざとらしい笑顔 or 笑顔のわざとらしさ」

Object: 「わたし」

A good translation has already been given in the comment section above. If the
listeners are indeed the students, change the "their" in that TL to "your".
CC BY-SA 3.0
2015-10-22T00:45:01.327
28812
2015-10-22T00:45:01.327
2020-06-17T08:18:27.500
-1
28808
answer