Aichmalōtizō (G163) is the verb 'to take captive' (aichmalōtos: a prisoner of war, from aichmē: spear point + halōtos: captured). Paul uses it twice in crucial contexts: taking 'every thought captive to obey Christ' (2 Corinthians 10:5) and describing false teachers who captivate weak-willed women (2 Timothy 3:6).
The warfare language of 2 Corinthians 10:5 is tactical and active. The Christian is to take every thought as a prisoner and present it to Christ for judgment. The same verb used for violent military capture is applied to the inner life of the mind. Spiritual warfare is not merely defensive; it is the aggressive bringing of every idea, argument, and imagination under Christ's lordship.