synonymous words together

English as a Second Language English Vocabulary, Grammar and Idioms
1
  1. The service at this hotel is disgusting and appalling.
  2. If you truly and really love me, you’ll reject your parents’ rejection of our marriage.
    Are these sentences OK?
    Cam I use two synonymous words together as in #1 like ‘disgusting and appalling’ and in
    #2 like ‘truly and really’?
2

They are OK, but the usual word order is “really and truly” (this is almost a set expression).