Adolescence /ˌæd

abstract /ˈæb.strækt/ adjective GENERAL
1. existing as an idea, feeling or quality, not as a material object
Truth and beauty are abstract concepts.
2. describes an argument or discussion that is general and not based on particular examples
This debate is becoming too abstract - let's have some hard facts!
3. the abstract
general ideas
I have difficulty dealing with the abstract - let's discuss particular cases.
So far we've only discussed the question in the abstract (= without referring to any real examples) .
cognitive /ˈkɒg.nɪ.tɪv/ /ˈkɑːg.nɪ.t ̬ɪv/ adjective [ before noun ] specialized
connected with thinking or conscious mental processes
Some of her cognitive functions have been impaired.
cognitive behaviour/development
cognitive therapy/psychology
clumsy /ˈklʌm.zi/ adjective
1. awkward in movement or manner
The first mobile phones were heavy and clumsy to use, but nowadays they are much easier to handle.
My attempts to apologize were very clumsy (= not said well) .
2. describes someone who often has accidents because they do not behave in a careful, controlled way
That's the third glass you've smashed this week - you're so clumsy!