There are 16 words that end with 'acid'.
| acid | diacid | placid |
| antacid | monacid | nonacid |
| oxyacid | peracid | subacid |
| triacid | characid | hydracid |
| hypoacid | monoacid | tetracid |
| hyperacid | ||
Note: These 16 words that end with 'acid' are found from the USA & Canada version of the tournament Scrabble word list.