[ ahy-suh-ley-shuh-nist, is-uh- ]
/ ˌaɪ səˈleɪ ʃə nɪst, ˌɪs ə- /


a person who favors or works for isolationism.


of, relating to, or characteristic of isolationists or isolationism: to be accused of isolationist sympathies.

Origin of isolationist

An Americanism dating back to 1860–65; isolation + -ist
Related formsan·ti-i·so·la·tion·ist, noun, adjectiveun·i·so·la·tion·ist, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for isolationist

Word Origin and History for isolationist


in reference to U.S. foreign policy, 1899 (earlier in reference to treatment of leprosy), from isolation + -ist. Isolationism is attested by 1922.

Online Etymology Dictionary, © 2010 Douglas Harper