condign
Concise Oxford English Dictionary © 2008 Oxford University Press:
condign /kənˈdʌɪn/
▶adjective formal (of punishment) fitting and deserved.
– derivatives
condignly adverb.
condignly adverb.
– origin ME: from OFr. condigne, from L. condignus, from con- ‘altogether’ + dignus ‘worthy’.
'condign' also found in these Oxford entries:

