How to get an random row between a range of rows with LIMIT and OFFSET?

How to get a random row from a selected 50 rows fetched using LIMIT and OFFSET? OFFSET value is dynamic, it can be 0, 50, 100, and so on.

The current solution is to fetch all rows and they pick one random out of them, however, would it be more efficient to do it natively using SQL?

SELECT * 
FROM words
WHERE
    example IS NOT NULL AND
    definition IS NOT NULL AND
ORDER BY frequency DESC
LIMIT 50 OFFSET 0