【ignore】
(a)take no notice of (sb/sth)
* You've been ignoring me.
* I can't ignore his rudeness any longer.
* ignore criticism
(b)deliberately refuse to greet or acknowledge (sb)
* I said hello to her, but she ignored me completely!
【concern】
concern 1
v
1.(a) be the business of (sb); be important to; affect
* Don't interfere in what doesn't concern you.
* The loss was a tragedy for all concerned.
(b) be about (sth); have as a subject
* a report that concerns drug abuse
2. be busy with sth; interest oneself in sth
* There's no need to concern yourself with this matter; we're dealing with it.
3. worry (sb); trouble; bother
* Our losses are beginning to concern me.
concern 2
n
1. (a)worry; anxiety
* There is now considerable concern for their safety.
* There is growing concern that they may have been killed.
(b)cause of anxiety
* Our main concern is that they are not receiving enough help.
2. thing that is important or interesting to sb
* What are your main concerns as a writer?
3. company; business
* a huge industrial concern
【settle】
1. (a) make one's permanent home in (a country, etc) as a colonist
* The Dutch settled in South Africa.
(b) make one's home in a place
* After years of travel, we decided to settle here.
2.come to rest on sth; stay for some time on sth
* The bird settled on a branch.
* Clouds have settled over the mountain tops.
3. make (sb/oneself) comfortable in a new position
* The nurse settled her patient for the night.
* He settled himself on the sofa to watch TV.
4. (cause sb/sth to) become calm, composed or relaxed
* Have a drink to settle your stomach.
* This pill will help to settle your nerves.
* He had been quite anxious, but I managed to settle his mind.
5. (a)make an agreement about sth; arrange sth finally or satisfactorily; deal with sth
* You should settle your affairs (eg by making a will) before you leave.
* We have settled that we will leave next week.
(b) resolve a legal dispute by mutual agreement
* The parties in the lawsuit settled (with each other) out of court.
6. (a) pay (what is owed, a bill, etc)
* You owe a lot, and it's now time to settle (with your creditors).
* Please settle your bill before leaving the hotel.
(b) punish sb for (an injury, insult, etc that one has suffered)
* He thinks he can laugh at me, but I'll settle with him soon.
7. (a) (cause sth to) sink to a lower level
* The dregs have settled at the bottom of the bottle.
* The shower of rain has settled the dust.
(b) (cause sth to) become clear as solid matter sinks
* Leave the wine on a shelf for a week to settle it.
(c) become more compact; subside
* The contents of the packet have settled in transit.
【suffer】
1. feel pain, discomfort, great sorrow, etc
* Do you suffer from headaches?
* She's suffering from loss of memory.
2. experience or undergo (sth unpleasant)
* We suffered huge losses in the financial crisis.
3. become worse; lose quality
* Your studies will suffer if you play too much football.
4. tolerate (sth); stand
* How can you suffer such insolence?
5. suffering
n
pain of body or mind
* There is so much suffering in this world.
参考资料：牛津高阶英汉双解词典