inadvance

As a verb advanced is

(advance).

As an adjective advanced is

(senseid)at or close to the state of the art.

Inadvance is likely misspelled.

Inadvance has no English definition.

As a verb advance is

to bring forward; to move towards the front; to make to go on.

As a noun advance is

a forward move; improvement or progression.

As an adjective advance is

completed before need or a milestone event.