New Age, tortuous, time wasted: intolerable! (10)
I believe the answer is:
outrageous
'intolerable' is the definition.
(thesaurus)
'new age tortuous time wasted' is the wordplay.
'new' is an anagram indicator.
'time' becomes 't' (abbreviation).
'wasted' indicates named letters should be taken away.
'age'+'tortuous'='agetortuous'
'agetortuous' with 't' taken out is 'ageortuous'.
'ageortuous' anagrammed gives 'OUTRAGEOUS'.
(Other definitions for outrageous that I've seen before include "Shocking" , "Exorbitant" , "undignified" .)