Promising

His career prospects at the company are not too promising.

Mars is a promising place where we may be able to live.

Jeff lost yesterday's match, but I'm sure he is a promising tennis player.

Keep track of everything that looks promising.

With the appearance of a promising new writer, the aging novelist fell from prominence.

Let me introduce a promising young writer to you.

I haven't read both his novels, but judging from the one I have read, he seems to be a promising writer.

Now he is recognized as one of the most promising writers.

I think of him as a promising journalist.

He is a promising young businessman.

a promising young apprentice

The obtained low and anisotropic thermal conductivity, and feasibility of synthesis, in addition to other reports on high electron mobility, make arsenene a promising material for a variety of applications, including thermal management and thermoelectric devices..

So it cannot be supposed that promisings differ from other word-givings in that a word-giver makes a promise only if he or she uses the locution "I promise".