難い, かたい
difficult, hard
これは始末の難い問題だ。
にくい, 難い, 悪い, がたい
Suffix, Usually in kana, after -masu stem of verb
difficult to ..., hard to ...
これは始末の難い問題だ。
ストレス
stress
ストレスを避けることが必要です。
に
Particle
1. at (place, time), in, on, during
2. to (direction, state), toward, into
3. for (purpose)
4. because of (reason), with
5. by, from