Words to Describe formalities

How formalities often is described ("________ formalities")

• empty
• such
• polite
• cumbersome
• solemn
• bureaucratic
• necessary
• certain
• same
• various
• official
• religious
• cold
• legal
• prescribed
• ceremonial
• fewer
• conventional
• ordinary
• few
• administrative
• meaningless
• usual
• due
• further
• excessive
• tedious
• useless
• outward
• lengthy
• corporate
• mere
• stiff
• vain
• judicial
• endless
• routine
• rigid
• ecclesiastical
• requisite
• tiresome
• diplomatic
• accustomed
• constitutional
• statutory
• required
• numerous
• proper
• unnecessary
• customary
• trivial
• complicated
• petty
• traditional
• procedural
• strict
• elaborate
• preliminary
• brief
• technical
• external