Englishfor English speakers
keeping
—
noun
conformity or harmony
his behavior was not in keeping with the occasion
—
noun
the responsibility of a guardian or keeper
he left his car in my keeping
—
noun
(= retention)
the act of retaining something
a
Determinative
—
A is used when the following word could be any of a certain type.
Compare "A book I saw on the shelf" and "The book I gave you yesterday".
a
Noun
—
A is the first letter of the alphabet.
The letter "a" comes before "b".
—
In some schools, an A is a very high grade.
Ron got an A on his earth science test.
mistress
Noun
—
A mistress is a woman that a married man is having an affair with. She is not the man's wife, but the other woman that he is having a romantic or sexual relationship with. Usually, a mistress is kept secret.