1.discordn.不和，纷争(strife, conflict)

词根记忆：dis(不)+cord(一致)叶不和，纷争

例:international discord国际争端

2.discount v.忽视(to disregard);打折(to sell or offer for sale at a reduced price)n.折扣 (a reduction from the full or standard amount of a price or debt)

词根记忆：dis（不）+count(计算)一不计算在内--折扣

例:Many scholars discount the role of public policy when explaining employers' maternity leave policies.//discount stores折扣店

3.discrepancy n．差异(difference);矛盾（the quality or state of being discrepant）

词根记忆：dis(分开)+crep(破裂)+ancy--裂开--差异；矛盾

例:There was a discrepancy in the two reports of the accident.

4.discrete a.个别的(individually distinct)；不连续的(noncontinuous)

词根记忆：注意：discreet(a．小心的，谨慎的)

例:The American classical virtue stressed civic duty and made the whole community greater than its discrete parts. ll Digital recordings reduce the original sound to a series of discrete numbers.

5.discretion n.谨慎(the quality of being discreet);审慎(prudence)

例:Ten years ago physicians were allowed more discretion.

6.discretionary a.自由决定的(exercised at one's own discretion)；可随意使用的(available for use as needed or desired)

词根记忆：来自discretion(n．自行处理)

例:discretionary powers自主行事的权力//You may be eligible for a discretionary grant for your university course.

7.discriminate v.(against)歧视(to look down upon sb./sth.)；辨别(to distinguish)

词根记忆：dis+crimin(罪行)+ate--种罪行一歧视

例:lt's totally wrong to discriminate against women.//We must learn to discnminate right from wrong.

派生词：discrimination(n.歧视)：discriminatory(a.歧视的，不公平的)

8.disdainful a．轻蔑的，鄙视的(scomful and contemptuous)

词根记忆：来自disdain( v./n.鄙视，蔑视)

例:He's disdainful of anyone who is from America.

9.disenchanted a．不再着迷的，不抱有幻想的(disappointed, dissatisfied)

词根记忆：来自disenchant(v.使清醒)

例:Little Tom quickly became disenchanted with his new toy.

10.disenfranchise v.剥夺…的公民权（to deprive of a franchise）

词根记忆：disenfranchise=disfranchise, dis（剥夺）+franchise（选举权）--剥夺选取权--剥夺…的公民权

例:White supremacists devised new methods to disenfranchise Negroes.