First night - very jittery (5)

I believe the answer is:

nervy

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

'first night very jittery' is the definition.
I can't tell whether this defines the answer.

'first night very jittery' is the wordplay.
'first night' becomes 'n' (1st letter of 'night').
'jittery' is an anagram indicator.
'very' is an anagram of 'ervy'.
'n'+'ervy'='NERVY'

Can you help me to learn more?

(Other definitions for nervy that I've seen before include "Highly-strung" , "On edge, tense" , "Easily agitated, tense" , "Anxious, jumpy" , "Highly strung" .)

I've seen this clue in The Globe and Mail.

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