年端 としはもいかにたくない
toshihamo ikanitakunai

Pre-noun Modifier
Negation Auxiliary

Expresses the lack of desire to do something ("do not want to…") of 年端もいかぬ

1. Don't want to bother with it.; Don't want to deal with it.; Don't want to be bothered.

Negative
Desiderative