The definition of an adjective is a part of speech that is used to describe a noun. Red, tall, better and fast are all examples of adjectives.
In modern parlance, a gentleman (from gentle + man, translating the Old French gentilz hom) is any man of good, courteous conduct. A gentleman may also simply be a polite term for any man, as in indications of gender-separated facilities, or as a sign of the speaker's own courtesy when addressing others. The modern female equivalent is lady.
The traits of a gentleman include: 1  A gentleman is generous with his time, wisdom, and resources. 2  A gentleman possesses a positive outlook on life. 3  A gentleman is a lifelong learner.  A gentleman models civility in how he treats 1  others. A gentleman is well-mannered and knows what is appropriate.  A gentleman possesses a strong work ethic.