dogmatic vs dogmatical

dogmatic and dogmatical both are adjectives.

Word	Noun	Adjective	Verb	Adverb
dogmatic	No	Yes	No	No
dogmatical	No	Yes	No	No

As adjectives, dogmatic and dogmatical are synonyms defined as:

dogmatic and dogmatical: characterized by assertion of unproved or unprovable principles

dogmatic (adjective)	dogmatical (adjective)
relating to or involving dogma	characterized by assertion of unproved or unprovable principles
of or pertaining to or characteristic of a doctrine or code of beliefs accepted as authoritative
characterized by assertion of unproved or unprovable principles