Dough
Though
Plough
The word "through" rhymes with "stew" and ends in -ough.
Tough
Dough.
Plough
scruff
Breakthrough, clickthrough, feedthrough, readthrough, walkthrough,
For words that rhyme with "tough" and end in "ough," you could consider "rough" or "slough." These words share a similar sound pattern.
Through. Pronounced like threw, but means something like: you can go through this way or something like that.
scruff
Beau Blow Toe
caught
enough