amenorrhoeal vs amenorrheic

amenorrhoeal and amenorrheic both are adjectives.

Word	Noun	Adjective	Verb	Adverb
amenorrhoeal	No	Yes	No	No
amenorrheic	No	Yes	No	No

As adjectives, amenorrhoeal and amenorrheic are synonyms defined as:

amenorrhoeal and amenorrheic: related to the suppression of normal menstrual flow for any reason other than pregnancy

Other synonyms of amenorrhoeal include amenorrheal, amenorrhoeic.

amenorrhoeal (adjective)	amenorrheic (adjective)
related to the suppression of normal menstrual flow for any reason other than pregnancy	related to the suppression of normal menstrual flow for any reason other than pregnancy