What is another word for under-hand?
Pronunciation: [ˌʌndəhˈand] (IPA) 
The term "under-hand" refers to something that is secretive, sly or done in a hidden way. Some synonyms for the word "under-hand" are covert, sneaky, furtive, stealthy, devious, cunning, scheming, and duplicitous. These words all convey a sense of hiding something or keeping things concealed deliberately. "Covert" suggests a hidden or secret activity, whereas "sneaky" suggests being deceitful or dishonest. "Furtive" implies being done in a way that avoids attention or suspicion. "Stealthy" suggests moving with quiet and careful actions to avoid being noticed. "Devious" and "cunning" suggest a cleverness in achieving a hidden goal, while "scheming" and "duplicitous" imply a deliberate intention to deceive or manipulate.
