Something that impedes, stands in the way of, or holds up progress, either physically or figuratively
Acceptance as valid or true.
Honour, favourable note, or attention.
The act of recognizing or the condition of being recognized (matching a current observation with a memory of a prior observation of the same entity).
A return of the feu to the superior.
Official acceptance of the status of a new government by that of another country.
The propriety consisting for antibodies to bind to some specific antigens and not to others.