licit

Not forbidden by formal or informal rules.

Undated, Pope Honorius III Solet Annuere (anonymous translator), Let it not be in any way licit to anyone among men to infringe this page of our confirmation, or to contravene it with rash daring.

You seem to have been very much offended because your father talks a little sculduddery after dinner, which it is perfectly licit for him to do, and which (although I am not very fond of it myself) appears to be entirely an affair of taste.

Explicitly established or constituted by law.

The contract validly made and consummated is dissolved by death alone. However, the Church must determine what is required for a valid and licit marriage contract.