There are 16 words that start with 'detec'.
| detect | detects | 
| detected | detecter | 
| detector | detecters | 
| detecting | detection | 
| detective | detectors | 
| detectable | detections | 
| detectives | detectability | 
| detectivelike | detectabilities | 
Note: These 16 words that start with 'detec' are found from the USA & Canada version of the tournament Scrabble word list.