[Grammar] Can "rewarding" be present participle without objective?

[Cain_Lee]

If you want your life to be more rewarding, you have to change the way you think.


I was told that rewarding is adjective and can't be present participle in above sentence.
Because reward is transitive verb.
If rewarding is present participle, it needs objective.

But I think we can see it as present participle.
That's because I found it is intransitive verb in below link.
http://www.dictionaryfocus.com/?action=definition&word=reward

However, the problem is that major dictionaries say reward is used only in transitive verb.

What I wonder is whether rewarding can be present participle without objective or not.
Thank you for your reading.

 

[Tdol]

It is an adjective there. I think you have misunderstood the boxes on that dictionary page- they give definitions of the word in blue that is used in the definition of reward and not the word reward ​itself.