Godan verb with 'u' ending, Transitive verbto swear; to vow; to take an oath; to pledge

Noun, Suru verb, Transitive verboath; vow; pledge; covenant

Adverb (fukushi)surely; upon my word; by Jove · (with neg) by no means; never

Noun, Suru verb(religious) vow · prayer (for something by making a vow)

Noun, Suru verb, Intransitive verboath; vow; attestation; solemn pledge