Honorary

google

ref

early 17th century: from Latin honorarius, from honor ‘honour’.

wiktionary

ref

From honor +‎ -ary, modelled after French honoraire, from Latin honorarius.

etymonline

ref

honorary (adj.)

1610s, "bringing honor, done or made to signify honor," from honor (n.) + -ary; possibly influenced by French honoraire, Latin honorarius "pertaining to honor, honorary." Specific sense "done merely to confer honor, without customary obligations or requirements" is from 1660s.