| Answer | Crossword Clue |
|---|---|
| SUSTAIN | Lengthen in duration |
| prolong | to lengthen in duration |
| prolongs | PROLONG, to lengthen in duration |
| prolonging | PROLONG, to lengthen in duration |
| prolonged | PROLONG, to lengthen in duration |
| protract | to prolong (to lengthen in duration) |
| protracts | PROTRACT, to prolong (to lengthen in duration) |
| protracted | PROTRACT, to prolong (to lengthen in duration) |
| protracting | PROTRACT, to prolong (to lengthen in duration) |
