無む節せっ操そう

na-adjective, noun

unprincipled; inconstant; unscrupulous

Describes a person or behavior lacking firm principles, easily changing opinions or acting without moral consistency.

• 彼かれは無む節せっ操そうな態たい度どで、誰だれにでもいい顔かおをする。

  He has an unprincipled attitude and tries to please everyone.

• 無む節せっ操そうに意い見けんを変かえる人ひとは信しん用ようできない。

  You can't trust someone who changes their opinion without principle.