What is unsmilingly? How to use in English

The word "unsmilingly" has a fascinating origin. The prefix "un-" is a negation prefix, which means it negates the meaning of the word that follows. In this case, it is used to negate the word "smilingly", which is an adverb that means in a smiling manner. The word "smilingly" has its roots in Old English, where it was "smiþelie", which means in a cheerful or complacent manner. The "-ly" suffix is a productive suffix in English, which forms adverbs that indicate manner. So, when you attach the negation prefix "un-" to "smilingly", you get "unsmilingly", which means in an expressionless, stern, or serious manner, without a smile. This word has been used in the English language since the 16th century to describe a demeanor that lacks warmth or friendliness.