Adjective : a painful wound; a painful night; a painful memory. ,a painful life.    From Dictionary.com. 

Only the safe and unpainful have been published in recent years -- at least in ambitious, voluminous form.    From Wordnik.com.  [The Book of the Damned] Reference

Bek: I think that in the last 10-20 years, dentists in the US have become very careful and really treat patients with kid gloves in order to attract them essentially, marketing themselves as a good, unpainful dentist to choose.    From Wordnik.com.  [Der Zahnarzt, Revisited] Reference

And indeed, hard and soft are names that we give to things only in relation to the constitutions of our own bodies; that being generally called hard by us, which will put us to pain sooner than change figure by the pressure of any part of our bodies; and that, on the contrary, soft, which changes the situation of its parts upon an easy and unpainful touch.    From Wordnik.com.  [An Essay Concerning Human Understanding] Reference

Mapalala said the animal's death was quick, unpainful and that no blood was shed.    From Wordnik.com.  [Mail & Guardian Online] Reference

There the change, though it was gradual and unpainful, according to the gentlest laws of nature, has been entire and complete.    From Wordnik.com.  [Recreations of Christopher North, Volume 2] Reference

With a curious, unpainful self-analysis he noted that the older members of the party, who in the course of nature were so much nearer death, did not shrink from its shows; but the young girl and the young man had not borne to look on them, and had quickly escaped from the place, somewhere outside the gate.    From Wordnik.com.  [Their Silver Wedding Journey — Complete] Reference

Give me unpainful method to die ... i m fed up with life ... i remain always depressed ........ i m useless? pls pls i beg u all tell me the easiest method i tried to hung from the ceiling by rope before 15 mintues but it was very painful ... pls pls people i beg u all tell me a easy method.    From Wordnik.com.  [Yahoo! Answers: Latest Questions] Reference