Wordnet 3.0
ADVERB (1)
1. 
 much; 
- Example: "allegro molto"
The Collaborative International Dictionary of English v.0.48:
Molto \Mol"to\, adv. [It.] (Mus.)
   Much; very; as, molto adagio, very slow.
   [1913 Webster]
WordNet (r) 3.0 (2006):
molto
    adv 1: much; "allegro molto"