Adolescence /ˌæd

inherent /ɪnˈher. ə nt/ , /-ˈhɪə.rənt/ /-ˈhɪr. ə nt/ adjective
existing as a natural or basic part of something
There are dangers/risks inherent in almost every sport.
I have an inherent distrust of lawyers.
sophisticated /səˈfɪs.tɪ.keɪ.tɪd/ /-ɪd/ adjective
1. having a good understanding of the way people behave and/or a good knowledge of culture and fashion
She was slim, svelte and sophisticated.
I don't suppose I have any books that would suit your sophisticated tastes.
He was older than me and from London and I thought him very sophisticated.
2. clever in a complicated way and therefore able to do complicated tasks
I think a more sophisticated approach is needed to solve this problem.
These are among the most sophisticated weapons in the world.
spontaneous /spɒnˈteɪ.ni.əs/ /spɑːn-/ adjective
happening or done in a natural, often sudden way, without any planning or without being forced
His jokes seemed spontaneous, but were in fact carefully prepared beforehand.
approving She's such a spontaneous, lively woman.