caudal

adjectives

constituting or relating to a tail
"caudal appendage"
is derived from
antonym
pertains to
resembling a tail
is derived from
situated in or directed toward the part of the body from which the tail arises
"caudal fins"; "the caudal end of the body"
is similar to
located at or near or behind a part or near the end of a structure

adverbs

toward the posterior end of the body