Negative: a cheap dress; tacky wallpaper; tasteless painting
Positive: a classy dress – very smart; very chic!
Negative: That ugly building’s an ayesore.
Positive: In the winter, my bedroom’s really warm and cosy
Negative: She’s very scatty and absent minded and always does well in exam.
Positive: I think he’s really attractive.
Formally, in linguistics, a lexicon is a language’s inventory of lexemes. Τhe word “lexicon” derives from the Greek λεξικόν (lexicon), neuter of λεξικός (lexikos) meaning “of or for words”
Linguistic theories generally regard human languages as consisting of two parts: a lexicon, essentially a catalogue of a language’s words (its wordstock); and a grammar, a system of rules which allow for the combination of those words into meaningful sentences. The lexicon is also thought to include bound morphemes, which cannot stand alone as words (such as most affixes). In some analyses,compound words and certain classes of idiomatic expressions and other collocations are also considered to be part of the lexicon.Dictionaries represent attempts at listing, in alphabetical order, the lexicon of a given language; usually, however, bound morphemes are not included.