Definitions

1. adjective

suffering from or experiencing nausea, especially seasickness, to an extreme degree

“After a long boat ride, many passengers were oversick and unable to keep anything down.”

2. adjective

excessively or excessively tired

“After a lack of sleep for several days, she was feeling oversick and just wanted to rest.”

3. noun

an instance of being extremely or excessively sick

“Her oversickness from the flu lasted for several weeks, but she’s finally on the mend.”

4. verb

to become extremely or excessively sick

“After eating the bad food, he oversicked and had to be taken to the hospital.”