Question

what is meant by non-lexical fillers

Answer 1

American English conversations are sprinkled with large variety ofnon-lexical sounds, as suggested by Table 1. Along with such familiar items as oh, um, and uh-huh, there are a large number of less common sounds such as h-nmm, hh-aaaah, hn-hn, unkay, nyeah, ummum, uuh and um-hm-uh-hm.