Synonyms for formal

Some common synonyms of formal are: formal [a.] 1. Express, explicit, positive, strict, official, in due form, according to established form. 2. Regular, methodical, set, fixed, rigid, stiff. 3. Ceremonious, precise, punctilious, stiff, starch, starched, prim, affectedly exact. 4. Constitutive, essential. 5. External, as mere form, merely ~. 6. (Met.) Organic, formative, primordial, innate, a priori.