in or within the limits or inner space of something
The cat hid inside the box when the fireworks started.
Please keep your phone inside your bag during the exam.
in or into the interior of a place or object
It’s cold out here; let’s go inside.
She stepped inside and shook the snow from her boots.
located on or relating to the inner part of something; not on the outside or public
The inside walls are covered with colorful murals.
I wrote my name on the inside cover of the book.
the inner part or surface of something
The inside of the cake was filled with strawberries.
He cleaned the inside of the car windows.
a person who is part of a group or organization and has special knowledge or access to private information not available to others
She is a tech company insider who knows all the upcoming product launches.
The journalist got tips from political insiders.
✦ Mid-19th century: from 'inside' + '-er', first used in political contexts to describe those with privileged access.
The sloping surface of a mountain.
The cabin sits peacefully on the steep mountainside.
Flowers bloom along the sunny mountainside.
✦ Mid-19th century: from mountain + side.
