There are 21 words that start with 'rare'.
| rare | rared |
| rarer | rares |
| rarefy | rarely |
| rarest | rarebit |
| rarebits | rarefied |
| rarefier | rarefies |
| rareness | rareripe |
| rarefiers | rarefying |
| rareripes | rarenesses |
| rarefaction | rarefactions |
| rarefactional | |
Note: These 21 words that start with 'rare' are found from the USA & Canada version of the tournament Scrabble word list.