Synonym: protect, safeguard, shield, support. Antonym: assail, attack, charge. Similar words: defender, defendant, defense, defensive, offender, refer, fence, offense. Meaning: [dɪ'fend] 
v. 1. argue or speak in defense of 2. be on the defensive; act against an attack 3. protect against a challenge or attack 4. fight against or resist strongly 5. protect or fight for as a champion 6. be the defense counsel for someone in a trial 7. state or assert.
v. 1. argue or speak in defense of 2. be on the defensive; act against an attack 3. protect against a challenge or attack 4. fight against or resist strongly 5. protect or fight for as a champion 6. be the defense counsel for someone in a trial 7. state or assert. 
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31. They fought to defend the realm.
32. Mating blackbirds will defend their territory against intruders.
33. It was my natural instinct to defend myself.
34. White blood cells help defend the body against infection.
35. They summoned men to defend their country.
36. They have briefed a top lawyer to defend it.
37. He had top lawyers to defend him.
38. She plans to defend the lawsuit vigorously.
39. They are fighting to defend their beliefs/interests/rights.
40. The first law of kung fu is to defend.
41. The best way to defend is to attack.
42. She demonstrated how best to defend oneself.
43. The cat fought fiercely to defend its young.
44. Our duty is to defend the country against its enemies.
45. The company has briefed a top lawyer to defend it.
46. He urged them to adhere to the values of Islam which defend the dignity of man.
47. He would certainly defend himself if anybody sets about him.
48. Black communities spoke up to defend the rights of all people of color.
49. He was prepared even to die in order to defend the honour of his family.
50. He got the best advocate in town to defend him.
51. Everyone should learn how to defend himself by the lawful means.
52. How the country will defend itself in the future has become increasingly important.
53. I had to defend myself or else he'd have killed me. Sentencedict.com
54. Torrence expects to defend her title successfully in the next Olympics.
55. Freedom from tyranny is a principle we should always defend.
56. Students should be ready to explain and defend their views.
57. Smith has announced that she will defend herself in the case.
58. Nobody wanted a war but when the chips were down and the enemy was ready to attack, everyone volunteered to defend their homeland.
59. All the police officers were equipped with shields to defend themselves against the rioters.
60. She felt she had to defend the honour of her profession.