cor
From Longman Dictionary of Contemporary Englishcorcor /kɔː $ kɔːr/ interjection British English spoken SURPRISEDused when you are very surprised or impressed by somethingcor-cor- /kə, kɒ $ kə, kɔːr, kɑːr/ prefix XXthe form used for con- before the letter ‘r’ to correlate (=connect together)Origin cor (1900-2000) god