inside in WordNet English dictionary

1. in reality
   "she is very kind at heart"
   at heart  at bottom  deep down  inside  in spite of appearance  at heart  at bottom  deep down  inside  in spite of appearance 
   
2. within a building
   "in winter we play inside"
   inside  indoors  inside  indoors 
   
3. on the inside
   "inside, the car is a mess"
   inside  within  inside  within 
   
4. with respect to private feelings
   "inwardly, she was raging"
   inwardly  inside  inwardly  inside 
   

1. confined to an exclusive group
   "privy to inner knowledge"; "inside information"; "privileged information"
   inside  inner  privileged 
   
2. relating to or being on the side closer to the center or within a defined space
   "he reached into his inside jacket pocket"; "inside out"; "an inside pitch is between home plate and the batter"
   inside 
   
3. away from the outer edge
   "an inner lahne"; "the inside lane"
   inside 
   
4. being or applying to the inside of a building
   "an inside wall"
   inside 
   

1. the inner or enclosed surface of something
   inside  interior 
   
2. the region that is inside of something
   inside  interior