Question

Can you find the word undistinguished in your dictionary? (If not, look up the word distinguished and say what undistinguished must mean.)

Answer 1

Hint:A dictionary is a list of terms sometimes arranged alphabetically (or by radical and stroke for ideographic languages) in one or more particular languages, which may include details on meanings.
Dictionary contains root words.

Complete answer:
In my dictionary, I can not find the word 'undistinguished' because it is not the root word.
Its meaning, however, may be derived from the word 'distinguished,' which means attractive, interesting, or successful.
ADJECTIVE :-
You mean that they have been very successful in their profession and have a strong reputation if you describe an individual or their work as distinguished.
Example :- a distinguished educational family.
You mean that they look very noble and honourable when you describe someone as distinguished.
Example:- He looked very different, very distinct.

Thus, undistinguished means that they are not attractive, interesting, or successful.
example :- his short and undistinguished career as an art student
or
not particularly good or bad
example :- an undistinguished career
or
something or someone without distinction
example :- undistinguished features
symbolises an individual's regular appearance or actions.

Note:Dictionaries are obliged to include "function words" (those that perform grammatical functions in a language, such as documents, pronouns, prepositions, and conjunctions) and "referential words" in the two basic forms of words of a language (those that symbolize entities outside the language system).