1) Acknowledge 2) Agnise 3) Cognise 4) Cognize 5) Know 6) Realise 7) Realize 8) Recognise 9) Recognize 10) To acknowledge 11) To recognise 12) To recognize 1) Agnise 2) Realize 
to acknowledge or confess
• (v. t.) To recognize; to acknowledge.
Ag·nize' (ăg*nīz') transitive verb [ Formed like recognize , from Latin agnoscere .] To recognize; to acknowledge. [ Archaic] « I do agnize a natural and prompt alacrity. Shak. » 
agnise verb be fully aware or cognizant of
to recognize; acknowledge; own.