| Grunts |
| Hesitations |
| Pause fillers |
| Speech fillers |
| Dull responses |
| Speech stumbles |
| Hesitant sounds |
| Sounds of doubt |
| Address lapses? |
| Thinking sounds |
| Uncertain sounds |
| Vocalized pauses |
| Relatives of ers |
| Orator's stumbles |
| Hesitating sounds |
| Hesitation sounds |
| Confused responses |
| Articulated pauses |
| Sounds of disbelief |
| Conversation lapses |
| Inarticulate pauses |
| Uncertain reactions |
| Stammered syllables |
| Hesitation syllables |
| Uncertain utterances |
| Sounds of hesitation |
| Sounds of uncertainty |
| Gap fillers, of sorts |
| Hesitant interjections |
| Nervous speaker's sounds |
| Hesitant speaker's sounds |
| Nervous speaker's syllables |
| Sounds edited out of some audio |
| Reactions to tough questions, maybe |
| Sounds made when searching for words |
| Sounds from someone not good with, you know, word things |
| Sounds you might make a lot if you haven't thought of an excuse |