Common nouns ending in y preceded by a vowel take only the s (alloys, days, attorneys). Words ending in o: If o is preceded by a consonant, most plurals require es (tomatoes, echoes). Pianos is an exception. Words ending in o, directly after a vowel, take the s (folios, radios).
noun. The definition of an adventure is an exciting or unusual experience that usually involves risks. Going on a journey uncharted through a forest is an example of an adventure.
Example Sentences for aristocracy. Never was it known that an aristocracy, which was haughty and tyrannical in one century, became easy and mild in the next. The old Russian boyars were an example of such an aristocracy.