There are multiple definitions - click on the translation that matches your context.

法律下成立的房产按揭

形容词

neolog

tacit

adjective

Definitions of tacit

unspoken, but implied by the circumstances

It would be a violation of the tacit agreement between military and civil forces.

describes a mortgage (=security interest in real property) that is created by law rather than through an agreement between the parties

She obtained judgment against her with recognition of her legal and tacit mortgage upon all of his property.