1. For the most part
   - principally, primarily, mainly, in the main, majorly

See also: chief

• drop arch
• drop away
• drop back
• drop behind
• drop biscuit
• drop by
• drop by the wayside
• drop cap
• drop cloth
• drop curtain
• drop down
• drop earring
• drop goal
• drop hammer
• drop in
• drop keel
• drop like flies
• drop off
• drop one's serve
• drop open
• drop press
• drop scone
• drop shot
• drop the ball
• drop zone