Rotten hand is a phrase with negative connotations often used in reference to corrupt individuals. However, there are various alternative phrases that could be used to describe similar characteristics. Some possible synonyms and related terms for "rotten hand" include "untrustworthy," "dishonest," "corrupt," "deceitful," "treacherous," "crooked," "unscrupulous," "fraudulent," and "venal." Additionally, terms like "backhanded," "underhanded," and "shady" could be used to describe someone who is manipulative and works behind the scenes to achieve their goals. While each phrase has different nuances and meanings, all indicate a lack of honesty and integrity.