offensive-n; 2 Senses

Sense Number 1: a military campaign

Commentary: OFFENSIVE[+event][+campaign][+military]

The army has launched several offensives against the guerillas.
The enemy's offensive came as a total surprise to the encamped army.

WordNet 3.0 Sense Numbers: 1

Sense Number 2: bold or forceful initiative, often political

Commentary: OFFENSIVE[+activity][+initiative][+aggressive][+goal_oriented]

The mayor spoke of the need for a new offensive against violent crime.
Our company's new ad offensive has resulted in increased market share.

WordNet 0.0 Sense Numbers: 1b