Collocations for impressive - adj.

be, look, seem | become | remain | make sth
The fact that he is so young makes his achievements even more impressive.

find sth

decidedly, enormously, extremely, highly, hugely, immensely, mightily, most, particularly, really, tremendously, truly, very
The new building looks most impressive.

far from, hardly, not unduly
He was far from impressive in his semi-final against Federer.

fairly, pretty, quite, rather | undeniably, undoubtedly | suitably
A large portico provides a suitably impressive entrance to the chapel.

equally, similarly
The scenery to the north of the lake is equally impressive.

consistently | technically, visually
The film is technically impressive, but lacks real excitement.