100 Words Every C1 English Learner Should Know

No.	Item	Definition
1.	accountability	Responsibility for explaining and justifying your actions.
2.	acknowledge	Accept or admit that something is true.
3.	adverse	Harmful or unfavorable.
4.	advocate	Publicly support an idea or course of action.
5.	albeit	Although; even though.
6.	ambiguous	Having more than one possible meaning.
7.	anticipate	Expect something and prepare for it.
8.	arbitrary	Based on personal choice rather than clear reasons.
9.	assumption	Something accepted as true without proof.
10.	attribute	Consider something caused by a particular factor.
11.	bias	An unfair preference for or against something.
12.	coherent	Logical, clear, and well organized.
13.	compelling	Strongly convincing or engaging.
14.	comprehensive	Covering all important aspects of something.
15.	consensus	General agreement among a group.
16.	constraint	Something that limits what you can do.
17.	conversely	In an opposite or contrasting way.
18.	convey	Communicate an idea, feeling, or message.
19.	criterion	A standard used to judge something.
20.	deficit	The amount by which spending exceeds income.
21.	dilemma	A situation requiring a difficult choice.
22.	diminish	Become or make something smaller or weaker.
23.	disclose	Reveal information previously kept private.
24.	discrepancy	A difference between things that should match.
25.	dismiss	Reject something as unworthy of consideration.
26.	distort	Change something so it becomes misleading or inaccurate.
27.	elaborate	Explain something in greater detail.
28.	embrace	Accept an idea or change willingly.
29.	empirical	Based on observation or experiments.
30.	entail	Involve something as a necessary part or consequence.
31.	exert	Apply effort, influence, or pressure.
32.	expenditure	Money spent on something.
33.	explicit	Stated clearly and directly.
34.	facilitate	Make an activity or process easier.
35.	feasible	Possible and practical to achieve.
36.	fluctuate	Rise and fall or change irregularly.
37.	framework	A basic structure supporting ideas or activities.
38.	hinder	Make progress or action more difficult.
39.	impartial	Not favoring any side.
40.	implement	Put a plan or decision into practice.
41.	implication	A possible consequence or suggested meaning.
42.	implicit	Suggested without being stated directly.
43.	incentive	Something that motivates someone to act.
44.	inevitable	Certain to happen; impossible to avoid.
45.	infer	Reach a conclusion from evidence or clues.
46.	inherent	Existing as a natural, essential part.
47.	insight	A clear, deep understanding of something.
48.	integrity	Honesty and strong moral principles.
49.	legislation	Laws considered or passed by a governing body.
50.	legitimate	Allowed by law or accepted rules.
51.	liability	Legal responsibility for something.
52.	namely	Used to state exactly what is meant.
53.	negligible	Too small to matter.
54.	nonetheless	Despite what has just been said.
55.	objective	Based on facts rather than personal feelings.
56.	obsolete	No longer used because something newer exists.
57.	offset	Counterbalance an effect, cost, or disadvantage.
58.	ostensibly	Apparently, though perhaps not actually.
59.	outweigh	Be greater in importance than something else.
60.	oversee	Supervise an activity and ensure proper performance.
61.	pertinent	Directly relevant to the matter being discussed.
62.	pivotal	Extremely important in determining an outcome.
63.	plausible	Seeming reasonable or likely to be true.
64.	predominantly	Mainly or for the most part.
65.	premise	An idea on which an argument rests.
66.	presumably	Probably, based on what is known.
67.	prevalent	Common or widespread in a particular context.
68.	profound	Very great, deep, or significant.
69.	rationale	The reasons behind a decision or belief.
70.	reconcile	Make conflicting ideas or situations compatible.
71.	reinforce	Make something stronger or more convincing.
72.	resilient	Able to recover quickly from difficulties.
73.	respectively	In the same order as previously mentioned.
74.	revenue	Income received by a business or government.
75.	rigorous	Very careful, thorough, and exact.
76.	robust	Strong and able to withstand difficulties.
77.	scope	The range or extent of something.
78.	scrutinize	Examine something very carefully.
79.	skeptical	Doubtful about whether something is true.
80.	subjective	Based on personal feelings or opinions.
81.	substantial	Large in amount, size, or importance.
82.	subtle	Not obvious or easy to notice.
83.	susceptible	Easily affected or influenced by something.
84.	sustain	Keep something continuing over time.
85.	tentative	Not certain or finally agreed upon.
86.	thereby	As a result of that action.
87.	threshold	The level at which something begins or changes.
88.	transparency	Openness about decisions, actions, and information.
89.	ultimately	In the end; after everything is considered.
90.	undergo	Experience a process, treatment, or change.
91.	undermine	Gradually weaken or damage something.
92.	unprecedented	Never having happened or existed before.
93.	uphold	Maintain or defend a principle or decision.
94.	verify	Check that something is true or accurate.
95.	viable	Able to work successfully in practice.
96.	vulnerable	Easily harmed, hurt, or attacked.
97.	warrant	Make an action necessary or appropriate.
98.	whereby	By which means or process.
99.	withstand	Resist pressure or damage without giving way.
100.	yield	Produce a result, profit, or crop.