If you take evasive action, you deliberately move away from someone or something in order to avoid meeting them or being hit by them. At least four high-flying warplanes had to take evasive action
If you describe someone as evasive, you mean that they deliberately avoid giving clear direct answers to questions. He was evasive about the circumstances of his first meeting with Stanley Dean + evasively eva·sive·ly `I can't possibly comment on that,' Paul said evasively. + evasiveness eva·sive·ness She looked at him closely to see if his evasiveness was intentional
deliberately vague or ambiguous; "his answers were brief, constrained and evasive"; "an evasive statement" avoiding or escaping from difficulty or danger especially enemy fire; "pilots are taught to take evasive action