| Clue | Length | Answer |
|---|---|---|
| Functional | 3 letters | pro |
| Functional | 5 letters | ofuse |
| Functional | 5 letters | utile |
| Functional | 6 letters | useful |
| Functional | 6 letters | verbal |
| Functional | 6 letters | proper |
| Functional | 6 letters | usable |
| Functional | 7 letters | running |
| Functional | 7 letters | serving |
| Functional | 7 letters | working |
| Functional | 8 letters | operable |
| Functional | 8 letters | official |
| Functional | 9 letters | syntactic |
| Functional | 9 letters | psychotic |
| Functional | 9 letters | technical |
| Functional | 9 letters | efficient |
| Functional | 9 letters | operative |
| Functional | 10 letters | structural |
| Functional | 10 letters | transitive |
| Functional | 11 letters | utilitarian |
| Functional | 11 letters | substantive |
| Functional | 11 letters | operational |
| Functional | 11 letters | serviceable |
| Functional | 12 letters | psychopathic |
| Functional | 12 letters | professional |
| Functional | 13 letters | psychological |
| Functional | 13 letters | prepositional |
| Functional | 14 letters | administrative |
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