Huge lad, upset, took things lightly (7)
I believe the answer is:
laughed
'took things lightly' is the definition.
I can't judge whether this definition defines the answer.
'huge lad upset' is the wordplay.
'upset' indicates anagramming the letters.
'huge'+'lad'='hugelad'
'hugelad' anagrammed gives 'LAUGHED'.
Can you help me to learn more?
(Other definitions for laughed that I've seen before include "Showed amusement" , "Expressed amusement" , "Huge lad (anag)" , "Chortled" , "Expressed mirth" .)