Minor cycle is a term often used in music theory, referring to a sequence of chords derived from the minor scale. However, there are several other synonyms that can be used to describe this concept. One such term is "natural minor progression," which denotes a series of chords constructed using the notes of the natural minor scale. Another synonym would be "harmonic minor sequence," meaning a series of chords built from the harmonic minor scale. Additionally, the term "melodic minor cycle" can be used to describe a sequence of chords constructed using the melodic minor scale, which differs from the natural and harmonic minor scales in that it features differently raised and lowered notes in ascending and descending order.