To rhyme from "beautiful" and "pitiful", you'll need words that have the "iful" (that is, "i f u l") sound. But, the "i c a l" sound is a very close match as well.
Second, you'll need to try to match word length and syllable count. For example, one rhyme may go better with the syllable count of "beautiful" and will not work with the shorter "pitiful".
Your Beautiful.
You're Beautiful is a song originally sung by James Blunt. You're Pitiful is Weird Al Yankovic's spoof song of You're Beautiful.
The comparative degree form of "pitiful" is "more pitiful."
The word "bright" rhymes with fight and can also mean beautiful or full of light.
Pitiful means ful of shame so an example of a sentence would be: she was pitiful of what she did.
blitheful lemon.
elegant temperament
fair air
The cordiform chocolates brightened my otherwise pitiful day.
dime
pitiful thing = pobrecito
A horse is not a pitiful animal to begin with.