I. “+ noun
Etymology: International Scientific Vocabulary nonintervention + -ist
: one who does not intervene or favors nonintervention
the God of the Deists was … a noninterventionist — W.L.Sperry
especially : one who favors nonintervention in the affairs of another country
the trend of his votes revealed him as a noninterventionist — Current Biography
II. adjective
: implementing or favorable to nonintervention
noninterventionist policies
turned from a noninterventionist stand to one of internationalism — Current Biography