なんと不誠実なやつだろう。

なんと不誠実なやつだろう。

What a dishonest fellow!

なんと不誠実(ふせいじつ)なやつだろう。

Nanto fuseijitsuna yatsu darou.

何と (なんと)

what; how; whatever

不誠実 (ふせいじつ)

insincerity; dishonesty; untruthfulness; bad faith

奴 (やつ、しゃつ)

fellow; guy; chap; thing; object; (derogatory or familiar) he; she; him; her

だ (だ)

be; is; indicates past or completed action; indicates light imperative

Readings: フ、ブ

Meanings: negative, non-, bad, ugly, clumsy

Readings: セイ、まこと

Meanings: sincerity, admonish, warn, prohibit, truth, fidelity

Readings: ジツ、シツ、み、みの.る、まこと、みの、みち.る

Meanings: reality, truth