1. (of telephone numbers) not listed in the telephone directory
   "an ex-directory number"

See also: unlisted

• 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
• knowledgeably
• Knowlton's cactus
• known
• Knox