kritično

1. colloq. (with criticism) critically
   On na sve gleda veoma kritično. — He looks at everything very critically.
   Prema sebi je uvek bio kritično nastrojen. — He was always critically disposed towards himself.
2. (before an adjective) critically; dangerously
   Nivo vode u reci je kritično nizak. — The water level in the river is critically low.

For "with criticism, analytically" the standard form is kritički (kritički razmišljati, kritički pisati); kritično in this meaning is mostly colloquial. For "to a dangerous degree" (kritično nizak nivo, kritično niska temperatura) kritično is the form used.