1. queasy
I feel queasy.
Jo felt a bit queasy in the morning.
she drove to the office still feeling queasy
There were a lot of queues for the toilets and we were all a bit queasy
Feeling queasy means throwing up in my case.
I feel to queasy when I ride roller coasters.
In fact he felt queasy just from thinking about it.
Just the thought of blood makes me queasy.
2. nausea
I experience nausea when I go on too many rides.
nauseous (adj) nauseate(v)
She's pregnant and because of it, she has a nausea.
Many of these people have decided to live in the town to get relief from their condition, which causes severe headaches, nausea, pain and heart problems.
The sea voyage gave him a feeling of nausea.
She didn't feel anything except nausea.
feeling/wave of nausea
I had nausea on the same mind about my job
Gradually the feeling of nausea passed, and she was able to stand comfortably
nausea will pass, will leave you
Cancer patients often have to deal with debilitating bouts of nausea.
3. nauseous
The seasickness made her feel nauseous.
When I heard it I get nauseous.