irritate
The boy's foolish question irritated his mother.
manifest
She manifested little interest in her studies.
mingle
Security men mingled with the crowd.
obscure
I received a letter of complaint from them, but the letters of the sign were made obscure by rain.
paradox
"More haste, less speed" is a paradox. “
privacy
With seven people squashed in one house, you don't get much privacy.
radiate
The sun radiates both light and heat.
refrain
You must be able to refrain yourself in some matters in order to accomplish others.
supervisor
The supervisor didn't have time so far to go into it at length, but he gave us an idea about his plan.
surgical
The doctors and nurses had surgical masks on.