彼の話はほとんど信用できない。

he; him; his; boyfriend

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

talk; speech; chat; story; conversation; discussions; negotiation; argument

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

mostly; nearly; practically; well-nigh; almost invariably; all but; just about; almost

confidence; dependence; credit; faith; reliance; belief; credence; trust

to be able (in a position) to do; to be up to the task; to be ready; to be completed; to be made; to be built; to be good at; to be permitted (to do); to become intimate; to take up (with somebody); to grow; to be raised; to become pregnant