| Answer | Crossword Clue |
|---|---|
| lucubration | laborious or intensive study |
| lucubrations | LUCUBRATION, laborious or intensive study |
| lamp | to give evidence of laborious study or effort |
| lucubration | laborious work, study, thought, etc., esp. at night |
| lucubration | laborious work, study, thought, etc., esp. at night. |
| CRASHCOURSE | Intensive study program |
| workup | an intensive diagnostic study |
| workups | WORKUP, an intensive diagnostic study |
| LANGMUIR | Noted scientist heading intensive study of weather control. |
