admittedly

Concise Oxford English Dictionary © 2008 Oxford University Press:
admit/ədˈmɪt/

▶verb (admits, admitting, admitted)

• 1 confess that something is true or the case.

  ■ confess to or acknowledge (a crime, fault, or failure).

• 2 allow to enter.

  ■ receive (someone) into a hospital for treatment.

• 3 accept as valid.

• 4 (admit of) allow the possibility of.

– derivatives
admitted adjective,
admittedly adverb.

– origin ME: from L. admittere, from ad- ‘to’ + mittere ‘send’.