To relate or belong to; to have reference to or connection with; to affect the interest of; to be of importance to.
To engage by feeling or sentiment; to interest.
A good prince concerns himself in the happiness of his subjects.
To make somebody worried.
I’m concerned that she’s becoming an alcoholic.
That which one is concerned in; one's business.
Causing concern; worrisome.
it's very concerning that our neighbour seems to be crying very loudly these days
Important.