to slow down; to retard

slow; unhurried; sluggish; gradual; not tense; relaxed; to postpone; to defer; to stall; to stave off; to revive; to recuperate

to ease (tension); to relax; to cause sth to relax; to alleviate; relaxed; easy and unhurried; leisurely; soothing; mild (slope)

to defer; to postpone; to put off; to retard; to slow sth down

to postpone