There are 18 words that start with 'uncla'.
| unclad | unclamp |
| unclasp | unclamps |
| unclasps | unclassy |
| unclawed | unclaimed |
| unclamped | unclarity |
| unclasped | unclamping |
| unclasping | unclarified |
| unclarities | unclassical |
| unclassified | unclassifiable |
Note: These 18 words that start with 'uncla' are found from the USA & Canada version of the tournament Scrabble word list.