Showing age, like father around half term (5)
I believe the answer is:
dated
'showing age like' is the definition.
I can't tell whether this defines the answer.
'father around half term' is the wordplay.
'father' becomes 'dad' (dad is a kind of father).
'around' indicates putting letters inside.
'half' indicates taking half.
'term' with half the letters taken is 'te'.
'dad' placed around 'te' is 'DATED'.
Can you help me to learn more?
(Other definitions for dated that I've seen before include "Revealed the age of" , "out of the ark" , "Outmoded" , "square" , "Obsolete" .)