Adolescence /ˌæd

regret /rɪˈgret/ verb [ T ] -tt-
to feel sorry about a situation, especially something sad or wrong or a mistake that you have made
Is there anything you've done in your life that you regret?
[ + -ing verb ] I have always regretted not hav ing studied harder at school.
[ + ( that ) ] formal The council regrets (that) the money to subsidise the youth club is no longer available.
[ + to infinitive ] formal British Airways regret to announce the cancellation of flight BA205 to Madrid.
relax /rɪˈlæks/ verb PERSON
1. [ I or T ] to (cause someone to) become less active and more calm and happy, or to (cause a part of the body to) become less stiff
After work she relaxed with a cup of tea and the newspaper.
A good massage will relax your tired muscles.
He relaxed his grip on my arm (= He began to hold it less tightly) .