Regularly trendy youth in the 1950s (3)

I believe the answer is:

ted

I'm a little stuck... Click here to teach me more about this clue!

'youth in the 1950s' is the definition.
I can't judge whether this definition defines the answer.

'regularly trendy' is the wordplay.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
The alternate letters of 'trendy' are 'TED'.

Can you help me to learn more?

(Other definitions for ted that I've seen before include "Father ..., Dermot Morgan's TV creation" , "Comic TV Father" , "1950s teenager" , "Turnover and spread (hay)" , "Familiar form of Edward" .)

I've seen this clue in The Times.

Want a hint initially instead of a full solution? Install my app