The word "liege" can be a noun or an adjective (meaning loyal). There does not seem to be an adverb form, but you could use a prepositional phrase instead.
Liege, Belgium (LGG)
Frederick of Liege died in 1121.
Liege-Killer was created in 1987.
Liege Hulett was born in 1838.
disloyal, unfaithful
Standard Liege is a Belgian football (soccer) club.
While servants pledged their loyalty to the liege, they did not always like him or respect him.
Liege Hulett died in 1928.
"The barbarians are at our portcullis, my liege, shall I order the archers to take their positions?"
The Looters of Liege - 1914 is rated/received certificates of: UK:U
The peasant bowed before his liege, the king, and begged his forgiveness for stealing the gruel.
lēj