\Crit"ic*al*ly\, adv.
1. In a critical manner; with nice discernment; accurately;
   exactly.

         Critically to discern good writers from bad.
                                               --Dryden.

2. At a crisis; at a critical time; in a situation, place, or
   condition of decisive consequence; as, a fortification
   critically situated.

         Coming critically the night before the session.
                                               --Bp. Burnet.