• 彼の底意を計ることが出来なかった
    • I could not make out his true [underlying] motives [intentions].
    • 彼はお人よしで彼らの底意を見抜けなかった
    • He was too good-natured to see what they were reallyaiming at [《口》 up to].
    • 彼の言には底意がない
    • He means what he says.