The meaning of RARE is seldom occurring or found : uncommon. How to use rare in a sentence. Synonym Discussion of Rare.

Understanding the Context

1. occurring or found infrequently; markedly uncommon: a rare disease. 2. having the component parts loosely compacted; thin: rare gases.

Key Insights

3. unusually great. 4. admirable; exemplary: She showed rare tact in inviting them.