英和和英

I'm a bit worried.

to be anxious about something

unnecessary care

the condition of fearing something unreasonably

to worry about something

be in (great) anxiety

a great anxiety of a person

to give one anxiety―cause one anxiety―occasion one anxiety

I'm sorry for worrying you.

It is matter for anxiety―a source of care.

There's no point (in) worrying.

an anxiety

You have something on your mind

a worried frown

I was worried

showing care

My mind is oppressed with doubts and anxieties.

an affectation of warm concern

clear one's mind of worries

to worry about a particular thing

idle fears

a weight on one's mind―to weigh on one's mind

to worry unnecessarily

of a person, to be worried and thoughtful about something

I have been anxious at heart.

serious worries

counterfeit concern

have some misgivings about…

feel a little uneasy

wait with (great) anxiety