1. Marked by deception
   - sneaky, underhand 
2. With hand brought forward and up from below shoulder level
   - underhand, underarm

See also: bent [Brit], corrupt, crooked

• know apart
• know backwards
• know by heart
• know nothing
• know the score
• know what's going on
• know what's what
• know-all
• know-how
• know-it-all
• Know-Nothing Party
• knowable
• knower
• knoweth
• knowing
• knowingly
• knowingness
• knowledgable
• knowledge
• knowledge base
• knowledge domain
• knowledge economy
• knowledgeability
• knowledgeable
• knowledgeableness