Ignore (verb)

1. Refuse to take notice of or acknowledge.
2. Pay no attention to; disregard.
3. Fail to consider.

Origin:

Late middle english: from old french ignorer, from latin ignorare, from in- "not" + gnorare "know".

Examples:

1. He ignored her when she spoke to him.
2. She ignored the warning signs.
3. I can't ignore this problem any longer.
4. He ignored the fact that she was angry.
5. She ignored the rules and did what she wanted.