Adolescence /ˌæd

acute /əˈkjuːt/ adjective EXTREME
1. If a bad situation is acute, it causes severe problems or damage
She felt acute embarrassment/anxiety/concern at his behaviour.
The problem of poverty is particularly acute in rural areas.
2. An acute pain or illness is one that quickly becomes very severe
acute abdominal pains
an acute attack of appendicitis
acute /əˈkjuːt/ adjective ACCURATE/CLEVER
3. (of the senses, intelligence, etc.) very good, accurate and able to notice very small differences
acute eyesight/hearing
an acute sense of smell
a woman of acute intelligence/judgment
allergic /əˈlɜː.dʒɪk/ /-lɝː-/ adjective
1. [ after verb ] having an allergy
I'm allergic to cats.
2. [ before noun ] caused by an allergy
an allergic reaction
3. humorous having a strong dislike of something
My dad's allergic to pop music.
alternate /ɒlˈtɜː.nət/ /ɑːlˈtɝː-/ adjective [ before noun ]
1. with first one thing, then another thing, and then the first thing again
a dessert with alternate layers of chocolate and cream
2. If something happens on alternate days, it happens every second day
Private cars are banned from the city on alternate days.
3. US ( UK alternative ) An alternate plan or method is one that you can use if you do not want to use another one.
brisk /brɪsk/ adjective
quick, energetic and active
a brisk walk
He set a brisk pace and we struggled to keep up.
Her tone on the telephone was brisk (= she spoke quickly and used few words) and businesslike .