1. in a way that suggests danger or harm; in a menacing manner

Examples

• The storm clouds gathered threateningly overhead.
• He stepped forward threateningly, his fists clenched.
• The dog growled threateningly at the stranger.
• She spoke threateningly to the children who were misbehaving.
• The waves crashed threateningly against the shore.
• The bully moved threateningly toward the smaller student.