To express this sign you can use a version of the sign
"grow up." What you do is you move the sign very quickly to the last part of
the sign. And then you hold it for a very small amount of time longer
than you do the sign "grow-up."
RAISED/GROW-up/ADULT:





Here is another version of adult.
Some people say this is "signed English" but I notice that many
d/Deaf people use it.
ADULT:


Note: If you replace the "A" with a "T" it means
"teenager."
Some people feel that you should sign teenager by signing "young."