이야말로

This precisely; the very one

It singles out the noun in front as the genuine, definitive case: this is the peak of contemporary design, this is the spring we have been waiting for, dreams are the very thing that gets you through hard times. Pointed at a person it can throw a compliment or an accusation back at them, as in the line telling someone that they are the one who is all over the place. It is the after-a-consonant shape of 야말로.

Register: emphatic but normal in speech