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Rhythm, Impulsive, Rain, Jungible.

Rhythm:

1. Senses relating to a regular repeated pattern of sound or movement.
2. The measured flow of words or phrases in verse, forming various patterns of sound as determined      by the relation of long and short or stressed and unstressed syllables in a metrical foot or line; an instance of this.

Impulsive: 

1. Having the property of impelling or producing impulsion; characterized by impulsion or impetus.

Rain:

1. Senses relating to water vapour.
2. Condensed moisture of the atmosphere falling to the ground visibly in separate drops; the fall of such drops; rainwater.

Jungible:

1. That may be joined.