| Funk |
| Torpor |
| Lethargy |
| The blahs |
| Down time |
| Discomfort |
| Listlessness |
| Vague unease |
| Lack of oomph |
| Uneasy feeling |
| Crummy feeling |
| Pre-flu feeling |
| Vague discomfort |
| Lethargic feeling |
| Feeling of unease |
| Depressed feeling |
| Sense of unhealth |
| General uneasiness |
| Not-so-good feeling |
| Unfocused uneasiness |
| Out-of-sorts feeling |
| Feeling of discomfort |
| Feeling of uneasiness |
| Pre-head cold feeling |
| Early sickness symptom |
| Sick-and-tired feeling |
| A feeling of discomfort |
| Feeling of vague illness |
| Vague sense of discomfort |
| Vague feeling of discomfort |
| Unexplainably crummy feeling |
| U.S. problem, according to J.E.C. |
| Coming-down-with-something feeling |