The word that means concerned with theories rather than their practical application is "theoretical."
fret
The root word of "carefully" is "care," which means to be concerned or attentive.
yourself
Worried is a synonym for concerned. Bothered is another word.........as in: I'm bothered by the fact that you don't know what a thesaurus is. I would try that out : )
The word is 'self-reproach'.
eponymous
"Superficiant" does not appear to be a recognized word in English. It may be a misspelling of "superficial," which means shallow, lacking depth, or only concerned with surface appearances.
disguised means to make yourself invisible
Concerned with or comprehending only what is apparent or obvious.
Self-confidence.
"Concerned" is a word that is synonymous (means the same as) the word "worried". If someone is concerned for you, he/she is worried for you, and he/she probably cares about you and wants to let you know that something is wrong with a current situation.