indorse in WordNet English dictionary

1. be behind; approve of
   "He plumped for the Labor Party"; "I backed Kennedy in 1960"
   back  endorse  indorse  plump for  plunk for  support 
   
2. give support or one's approval to
   "I'll second that motion"; "I can't back this plan"; "endorse a new project"
   second  back  endorse  indorse 
   
3. guarantee as meeting a certain standard
   "certified grade AAA meat"
   certify  endorse  indorse 
   
4. sign as evidence of legal transfer
   "endorse cheques"
   endorse  indorse