มั่นใจ in English:

I may seem confident, but I get extremely nervous speaking in front of people. My hands tremble, I get all tongue-tied, and sometimes I don't even know what I'm saying myself.

I'm confident

Kastur was a confident girl, and Mohandas felt jealous of her because he was still very shy

You should feel much more confident about your English speaking skills.

If you are at ease, you are feeling confident and comfortable.

He does not, in short, write with the candor of a man who is completely confident of his thesis.

People are most angry when they feel they are being mocked. That's why those who are confident in themselves seldom become angry.

Confident as I am that you will not trifle with this appeal, my heart sinks and my hand trembles at the bare thought of such a possibility.

In an age of globalisation, I am confident that this provides people with adequate protection.

self-confident, You need to be more self-confident if you want to become successful

to be confident of success. You should feel confident about your own abilities. Dillon has a very confident manner.

Amazon is confident it can change people's shopping habbits.

The confident teenager reminded everyone how young he really is

Children feel more comfortable and confident when they know what to expect.

People who want to become politicians should be confident by nature