precontact

As an adjective precontact

is describing a period before contact was established (especially with an indigenous people).

As a noun precontract is

(legal) a contract preceding another, especially a contract of marriage which, according to the ancient law, rendered void a subsequent marriage solemnized in violation of it.

As a verb precontract is

to contract prior to another process.

As an adjective precontact

is describing a period before contact was established (especially with an indigenous people).

As a verb recontact is

to contact again.