1 exterior, face, facing, shell, skin, case, casing, surface, front; façade:
What is that on the outside of the box? The outside of the house is painted white
2 aspect, appearance, look, demeanour, face, front, façade, mien, mask, disguise, false front, pretence:
One cannot tell what people are really like from the outside they present to the world
3 extreme, limit, most, maximum, utmost, best, worst, longest:
At the outside, you shouldn't pay more than half your income for housing. I'll wait for her for an hour at the outside
4 the world at large:
We had to bring in someone from the outside to complete the work.
5 exterior, external, out of doors, outdoor:
They have added an outside swimming-pool to the house.
6 maximum, maximal, highest, best, worst, greatest, most, largest, longest, furthest or farthest:
What was their outside estimate for replacing the roof? The outside time for driving here from London is about an hour
7 private, home, cottage, secondary, peripheral, independent, freelance:
Her outside job pays more than her regular work.
8 unlikely, remote, faint, Colloq slim:
He has an outside chance of beating the world record.
9 foreign, alien, outward; unconnected, excluded, uninvolved, disinvolved, independent, separate, different:
I'm worried that Phil might be subject to outside influences. An outside contractor is doing the work.
10 outdoors, out of doors:
Perhaps you'd like to step outside to discuss the matter further?