Countable Nouns That Start with O and End with LE

Explore 28 verified English countable nouns starting with O and ending with LE, including Obstacle, Oracle, Observable, Ogle, Omeprazole, Organelle and Outsole. Sort these count nouns with singular and plural forms by word length for ESL grammar practice, determiner usage, and plural spelling below, or review singular and plural count rules in our noun grammar guide.