underhand
US
UK underhand adj: figurative (dishonest, sneaky)
SC 偷偷摸摸的 tōu tōu mō mō de
SC 秘密的 tōu tōu mō mō de ，mì mì de
The politician was involved in various underhand activities including accepting bribes.
underhand adj: (throw, swing) (投掷)
SC 低手的 dī shǒu de
Underhand throws are permitted in this game.
underhand adv: (throw, swing)
SC 低手地 dī shǒu de
Veronica threw the ball underhand.
in an underhand manner expr: (in a deceitful or dishonest way)
SC 偷偷摸摸地 tōu tōu mō mō de
SC 以欺诈的方式 tōu tōu mō mō de，yǐ qī zhà de fāng shì
SC 以不诚实的方式 tōu tōu mō mō de，yǐ bù chéng shí de fāng shì
He is behaving in an underhand manner, going out with his best friend's girlfriend without him knowing.