two-fold in WordNet English dictionary

1. twice as great or many
   "ate a double portion"; "the dose is doubled"; "a twofold increase"
   double  doubled  twofold  two-fold 
   
2. having more than one decidedly dissimilar aspects or qualities
   "a double (or dual) role for an actor"; "the office of a clergyman is twofold; public preaching and private influence"- R.W.Emerson; "every episode has its double and treble meaning"-Frederick Harrison
   double  dual  twofold  two-fold  treble  threefold  three-fold 
   

two-fold in English Wiktionary