facultative, adj.
granting a privilege or permission or power to do or not do something
<adj.all>
facultative
able to exist under more than one set of conditions
<adj.all>
facultative
sample sentences
"a facultative parasite can exist as a parasite or a saprophyte"
lexical pointers
antonym
semantic pointers
domain of synset (topic)
of or relating to the mental faculties
<adj.pert>
facultative
lexical pointers
derived from/pertains to
not compulsory
<adj.all>
elective facultative