1. ～てやまない
Explanation: Expresses a strong feeling that continues without ceasing. It is mainly used with a limited set of verbs describing inner feelings, such as 願う, 期待する, 愛する and 祈る. It is not normally used for momentary bursts of emotion. The subject is usually the first person and is often omitted.
2. ～に堪えない（にたえない）
Explanation: Expresses an emotion so strong that the speaker cannot contain it. It is used with a limited set of nouns denoting intense emotions, such as 感謝, 感激, 同情 and 悲しみ. The subject is the first person.
3. ～ないではすまない / ～ずにはすまない
V ない + ずにはすまない
* Exception: verb する -> せずにはすまない
Explanation: Means that, judging from morality, social common sense, or the rules of the situation, the action must naturally be performed; failing to do it would be unacceptable. It is often used for apology, compensation, or making amends rather than for actions based merely on personal feelings or will.
4. ～ないではおかない / ～ずにはおかない
V ない + ずにはおかない
* Exception: verb する -> せずにはおかない
Explanation: Has two readings depending on the subject. With a first-person human subject, it expresses a strong determination to make something happen. With an event or inanimate subject, it means that the force of the situation will inevitably cause a certain result.
5. ～を禁じ得ない（をきんじえない）
Explanation: Expresses that, because of the situation unfolding before the speaker, an emotion wells up so strongly that it cannot be suppressed. It commonly occurs with emotion-related nouns such as 涙, 怒り, 同情 and 驚き. The subject is the first person.
6. ～を余儀なくされる / ～を余儀なくさせる
Explanation: Describes being forced by circumstances to do something despite not wanting to. ～を余儀なくされる focuses on the person or party forced into the action, while ～を余儀なくさせる takes the circumstance or cause as the subject that forces another party to act.
