Level one :
alternative: what are the alternatives ?
analyze: I analyze the problem and come up a solution for it.
approach: This is my approach to solve the problem.
arbitrary: The selection is arbitrary.
assess: You can assess your account through the World Wide Web.
assign: I assign you to tackle this problem.
assume: I assume that you are fine over there.
compensate: I will compensate you later.
complex: It is very complex situation.
comply: You must comply to the regulations.
component: There are several components in the project.
concept: It is a brilliant concept.
conclude: He concluded the meeting by action list.
consist: The meals consist of meats, vegetables and drinks.
constant: The speed of light is a constant.
construct: Let us construct this project this weekend.
consult: I will consult you before making any big decisions.
contact: You must contact your parents immediately.
context: The conversation is within the context of the agenda.
criterion: What is the criterion to pass the test ?
data: I need more data to figure out what is going on.
define: Please define the problem concisely.
definite: He has a definite feeling on his face.
denote: The roses denote your sincere congratulations.
deprive: Please do not deprive my freedom.
derive: He derives the equations from the original problem.
devise: He devise a simple formula to solve the puzzle.
dimension: Space is a three dimension concept.
distinct: You have distinct popular characters.
element: One element is missing here.
environment: You have a wonderful environment up there.
equate: Drinking whole bunch of water everyday equates taking good care of your body.
equivalent: To study hard is equivalent to pass the test for sure this term.
establish: Let's establish some priority to the tasks on hand.
evaluate: I will evaluate your  progress from time to time.
evident: It is the evident that got him in big trouble.
formulate: Let us formulate the components and relations here.
guarantee: I guarantee your success if you study hard.
hypothesis: Evolution is just a hypothesis without scientific proof yet.
identify: Taiwanese stick to their identity after the 921 earthquake.
ignore: Please do not ignore the safety concerns.
illustrate: This illustrates your happiness in the party.
impact: The space program makes a huge impact on the society.
implicit: His gene in color-blind is implicit.
imply: This implies that he crush on you.
indicate: Smiling indicates the acceptance of new friends.
initial: The initial offer is granted.
interpret: He can interpret Chinese into Japanese.
involve: This is more involved than I first thought.
magnitude: The magnitude matters here.
method: This is my method to take care this kind of problems.
minimum: The minimum wage is too low.
modify: He starts to modify his version of the story.
negative: Negative mind produce negative results.
obvious: It is a obvious mistake.
potential: The Yahoo have great potential to reach 300 dollars soon.
presume: I presume that she is not coming to the party tonight.
prime: The prime rate is only 5.5% this year.
proceed: Let's proceed the meeting now.
publish: He has published ten books so far.
pursue: I am going to pursue my Master degree at AAMU next year.
random: He is a random selection of his roommate.
range: The range is too big for me to consider this.
region: I am living in Tennessee river region.
require: It is required to pass TOEFL test before enter the graduate school.
restrict: I restrict my kids from watching TV in the afternoon.
reverse: It is selected in the reverse order.
role: You play a major role in the show tonight.
similar: Those two sisters are very similar.
specify: Please specify the requirements at the beginning.
status: You have student status here.
subsequent: It is a subsequent event after the dancing party.
suffice: Suffice plays a main role in making new words.
sum: Please sum them up and let me know ASAP.
summary: I want you to give me a summary report on this issue.
technique: This requires some skillful techniques.
tense: I feel very tense after two tests in a row last Friday.
ultimate: That is the ultimate solution.
usage: What is the usage of this machine ?
valid: Your driver license is still valid.
vary: The degree of understanding is vary.
vertical: Our company re-organized into vertical structure units.