External vs Outermost - What's the difference?

External is a synonym of outermost.

is that external is outside of something; on the exterior while outermost is (outer).

(en adjective)

Outside of something; on the exterior.

This building has some external pipework.

* Milton

Of all external things, / She [Fancy] forms imaginations, aery shapes.

* Shakespeare

Her virtues graced with external gifts.

Not intrinsic nor essential; accidental; accompanying; superficial.

* Trench

The external circumstances are greatly different.

Foreign; relating to or connected with foreign nations.

external''' trade or commerce; the '''external relations of a state or kingdom

(anatomy) Away from the mesial plane of the body; lateral.

* internal

* * * English words suffixed with -al

(head)

(outer)

Farthest outside; as far from the center or inside as possible.

He lived on the outermost edge of the city.