- Being young is handy for a person with a lisp - boyish man - Girlish or boyish - Immature, juvenile - Juvenile - Lisp useful for young at heart - What a lisper might call useful, when young
- Childish - Julie and Nev are crazy, youthful and immature - Youthful, immature - Young; youthful; as, a juvenile appearance. - Of or pertaining to youth; as, juvenile sports. - A young person or youth; -- used sportively or
familiarly.