Queasily
/ˈkwiːzəli/
Definition 1 of 2
Pro Tip 1/3Physical Discomfort
Use 'queasily' to express a sensation of physical discomfort, especially related to nausea or stomach upset. 
After riding the roller coaster, he walked off queasily, holding his stomach.
Pro Tip 2/3Preceding Symptoms
'Queasily' often precedes descriptions of symptoms, indicating the onset of feeling sick. 
She turned pale and queasily whispered that she needed to sit down.
Pro Tip 3/3Negative Anticipation
It can imply dread or anxiety about an upcoming event or action, suggesting a chance of feeling sick. 
He queasily prepared to give his speech, trying not to think about the audience.