- inside
- in•side[[t]ˌɪnˈsaɪd, ˈɪnˌsaɪd[/t]] prep.1) on the inner side or part of; within:inside the circle[/ex]2) prior to; within:to arrive inside an hour[/ex]3) in or into the inner part:Look inside[/ex]4) indoors:to play inside on rainy days[/ex]5) by true nature; basically:Inside, she's really very shy[/ex]6) sts Slang. in prison7) the inner part; interior:the inside of the house[/ex]8) the inner side or surface:the inside of the hand[/ex]9) inf insides, Informal. the inner parts of the body, esp. the stomach and intestines10) a position within a select circle of power, prestige, etc.:to be on the inside in the administration[/ex]11) the part closest to a specified point, as the part of an oval track closest to the inner rail12) inward nature, thoughts, feelings, etc13) sts confidential or private information:to have an inside on the new plans[/ex]14) situated or being on or in the inside; interior; internal:an inside seat[/ex]15) private; confidential; restricted:inside information[/ex]16) spo baseball (of a pitched ball) passing between home plate and the batter•Etymology: 1350–1400
From formal English to slang. 2014.