| noting(adjective, understanding, keen, sensible, certain) |
| observing(adjective, understanding, keen, sensible, certain) |
| omniscient(adjective, familiar, informed, learned, educated) |
| on the beam(expression, adjective, idiom, alert, familiar) |
| perceiving(adjective, understanding, keen, sensible, certain) |
| percipient(adjective, understanding, keen, sensible, certain) |
| prescient(adjective, familiar, informed, learned, educated) |
| privy(adjective, familiar, wise, witting, aware) |
| receptive(adjective, alert, familiar, wise, knowledgeable) |
| recognizing(adjective, understanding, keen, sensible, certain) |
| remarking(adjective, understanding, keen, sensible, certain) |
| scholarly(adjective, familiar, informed, learned, educated) |
| seeing(adjective, understanding, keen, sensible, certain) |
| sensitive to(expression, adjective, understanding, keen, sensible) |
| sensory(adjective, aware) |
| sharp(adjective, understanding, alert, familiar, wise) |
| supraliminal(adjective, understanding, keen, sensible, certain) |
| sure(adjective, understanding, keen, sensible, certain) |
| understanding(adjective, keen, sensible, certain, alert) |
| up(adjective, familiar, knowledgeable, aware, savvy) |