adjective
peaked
PEE-kid/piːkt/
Looking pale or unwell.
You look a little peaked; do you need to rest?

Etymology
Peaked describes someone as having wasted away, from an older verb meaning to look sickly or thin. That verb may evoke becoming pointed through emaciation, but its connection with a pointed peak is uncertain.
In context
you look a little peaked this morning you shouldn't have stayed up so late last night
More examples
- After three days with the flu, he still looks peaked.
- She looks pale and peaked after another sleepless night.
- I'm feeling better, even if I look a bit peaked.
Forms
peaked