Feeling that something is bothersome or too much trouble to do; colloquial adjective for tasks that are tiresome or that one can't be bothered to do.
宿題が多くてめんどくさいけど、早く終わらせよう。
There's a lot of homework and it's a pain, but I'll finish it quickly.
彼に頼むのはめんどくさいから、自分でやるよ。
It's a hassle to ask him, so I'll do it myself.
電車が遅れているし、乗り換えもめんどくさい。
The train is delayed and transferring is such a bother.