S: (adj) neck and neck, head-to-head, nip and tuck (inconclusive as to outcome; close or just even in a race or comparison or competition) "as they approached the finish line they were neck and neck"; "the election was a nip and tuck affair"
Adverb
S: (adv) neck and neck, head-to-head, nip and tuck (even or close in a race or competition or comparison) "the horses ran neck and neck"; "he won nip and tuck"