| Answer | Crossword Clue |
|---|---|
| DENSE | None too quick on the uptake |
| DENSE | Not too quick on the uptake |
| APT | Quick on the uptake |
| KEEN | Quick on the uptake |
| BRAINY | Quick on the uptake |
| SHARP | Quick on the uptake |
| SMART | Quick on the uptake. |
| SHARP | Quick on the uptake. |
| ALERT | Quick on the uptake |
| AGILE | Quick on the uptake |
| ASTUTE | Quick on the uptake |
| SMART | Quick on the uptake |
| SLOWER | Not quick on the uptake |
| DENSER | Not as quick on the uptake |
| SLOWER | Not so quick on the uptake |
| OBTUSER | Not as quick on the uptake |
| SMARTCOOKIE | Quick-on-the-uptake type, in slang |
