As a matter of form and Perfunctory

Perfunctory and as a matter of form are semantically related. in as a formality topic. In some cases you can use "Perfunctory" instead an adverb phrase "As a matter of form".

Perfunctory adjective - Having or showing a lack of interest or concern.

As a matter of form and perfunctory are semantically related. You can use "As a matter of form" instead an adverb "Perfunctory".