1. Nearest in space or position; immediately adjoining without intervening space
   "our rooms were side by side"
   - adjacent, next 
2. Closely related or associated
   "a city in which communism and democracy had to live side by side"

See also: close, related, related to

• seaman
• seamanlike
• seamanly
• seamanship
• seamed
• seamer
• seaminess
• seamless
• seamlessly
• seamount
• seamster
• seamstress
• seamy
• Sean O'Casey
• Seanad
• Seanad Eireann
• seance
• seaplane
• seaport
• seaquake
• sear
• search
• search and destroy mission
• search and rescue mission
• search engine