い
入

る

Godan verb, intransitive verb

1. to enter, to go in, to get in, to come in. Mainly used in fixed expressions and literary language.
2. to set (of the sun or moon), to sink, to go down.
3. to attain (nirvana, enlightenment, etc.), to achieve, to reach (e.g. a climax).

suffix, Godan verb

1. to do fully, to do intently, to do sincerely, to do deeply, to feel keenly.
2. to (reach a state) completely.