彼に誠意のあることは認める。

he; him; his; boyfriend

at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although

sincerity; good faith

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

to be (usu. of inanimate objects); to exist; to live; to have; to be located; to be equipped with; to happen; to come about

thing; matter; incident; occurrence; event; something serious; trouble; crisis; circumstances; situation; state of affairs; work; business; affair; after an inflectable word, creates a noun phrase indicating something the speaker does not feel close to; nominalizing suffix; pretending to ...; playing make-believe ...; alias; aka; nickname; alternative name; also known as

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

to recognize; to recognise; to observe; to notice; to deem; to judge; to assess; to approve; to deem acceptable; to allow; to admit; to accept; to confess (to a charge); to watch steadily; to observe carefully; to renown; to give renown to; to appreciate; to acknowledge