Ted and Jay primarily wear sweaters when they get away to the cabin in the winter.
Sweaters usually being worn when it's cold is an example of when sweaters are primarily worn.
- at first; originally
- mainly; principally
- Chiefly; mainly: a scholastic program primarily for seniors; a primarily middle-class neighborhood.
- At first; originally.
- (focus) Of a primary or central nature, first and foremost
primary +"Ž -ly