The Collaborative International Dictionary
Sickishly
Sickish \Sick"ish\, a.
Somewhat sick or diseased.
Somewhat sickening; as, a sickish taste. [1913 Webster] -- Sick"ish*ly, adv. -- Sick"ish*ness, n.
Wiktionary
sickishly
adv. In a sickish manner.