interactive
involving people playing among themselves; an exchange of activity or information between people or people and a computer
interfere
to get in between two people when it is not your problem or issue
interject
to throw a remark into a conversation between two or more people
intermission
the break between parts of a play, opera, or concert
international
between or among the nations of the world
Internet
A global network connecting millions of computers, making it possible to exchange information.
Interpersonal
between people (usually describing social activities)
interstate
between the states
interrupt
to break into someone's conversation
interpreter
a person who helps translate the languages between different people