彼の言い分も尤もだと思う

N5 彼 kare he N3 分 bu dividing, part, segment N3 尤も mottomo reasonable, natural, plausible N1 だと dato if it's the case N4 思う omou think, feel, suppose

N3 彼 hi / kare, kano, ka.no he, that, the N4 言 gen, gon / i.u, koto say, word, dire N3 分 bun, fun, bu / wa.keru, wa.ke, wa.kareru, wa.karu, wa.katsu part, minute of time, segment N4 思 shi / omo.u, omoera.ku, obo.su think, penser, pensar

N5 〜と思う to omou Indicates speaker thought opinion or assumption, connects clause with mental expression N5 〜と to Indicates company, quotation, natural condition, complete list, or direct connection between elements N5 〜の no Indicates possession, relation between nouns, nominal explanation, or turns a verb into a noun phrase N5 〜も mo Means also, adds another similar item, often replaces particles such as wa ga or o