1) Coactive 2) Powerful 1) Compelling 2) Constraining 3) Intimidating 4) Powerful 5) Serving or intended to coerce 6) Serving or tending to coerce 7) Strong-arm 
• (a.) Serving or intended to coerce; having power to constrain.
Co·er'cive adjective Serving or intended to coerce; having power to constrain. -- 
[adj] - serving or intended to coerce
coercive 1. Characterized by or inclined to coercion. 2. Using force or threats to make someone do something against his or her will.
adjective serving or intended to coerce; `authority is directional instead of coercive`
serving or tending to coerce.