We don't have synonyms for endorsing yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are enduring, indorsing and enforcing.
(adj) :
(law, of a driving offence) Leading to endorsement of one's driving licence with penalty points.
(adj) :
(of an airline ticket) That other airlines are obliged to accept in the event of the airline that issued the ticket failing to fly the ticket-holder.
(adj) :
(law, of a driving offence) Leading to endorsement of one's driving licence with penalty points.
(adj) :
(of an airline ticket) That other airlines are obliged to accept in the event of the airline that issued the ticket failing to fly the ticket-holder.