Synonyms for Sly

Synonyms starting with letter U

• underhand

  cunning, clever, secretive
• unscrupulous

  character trait, cunning, dishonest
• underhanded

  character trait, crafty, perverse
• untrustworthy

  cunning
• undercover
• unprincipled
• untruthful
• unreliable
• under-the-table
• unethical
• unfair
• unctuous
• underground
• urbane
• unconscionable
• unjust
• under the table
• uncandid
• under-the-counter
• ulterior
• unsporting
• unacknowledged
• under false pretense
• under wraps
• unworthy
• unconscientious
• unhonest
• unwasteful
• unbecoming
• unclear
• unfaithful
• untrue
• unprofessional
• up on
• unauthorized
• under cover
• unfrank
• unsafe
• ungentlemanly
• unpredictable