| Answer | Crossword Clue |
|---|---|
| clueless | Having no knowledge, understanding, or ability |
| blanker | Having temporarily no knowledge or understanding |
| skilled | Having or showing the knowledge, ability, or training to perform a certain activity or task well |
| noninert | having little or no ability to react chemically |
| inertly | having little or no ability to react chemically |
| inert | having little or no ability to react chemically |
| useless | Having no ability or skill in a specified activity or area |
