cannot - Master This Word
Master this word with our 5-step learning method – Learn English in English
cannot Word Meanings
- to be unable to do something
- to lack the ability or capacity
- to not be permitted to do something
cannot Example Sentences
Example sentences are the start of understanding. Don't rush to memorize. First feel how the word works in a sentence.
cannot Phonetic & Pronunciation
UK
/ˈkæn.ət/
US
/ˈkæn.ɑt/
cannot Word Etymology
can + not; Old English 'cunnan' (to know) + 'not'; Imagine trying to lift a weight and realizing you can't, showing your limits.
Note 1: These definitions and etymologies are not standard dictionary definitions, but extended explanations provided to help with memorization and understanding of the actual application of words. Through this background information, we strive to make words more vivid and easier to understand, and help you remember their meanings in real life.
Note 2: LexiTalk designs the learning flow around the linguistics principle of “Comprehensible Input.” When learners encounter material that is slightly above their level but still understandable from context, the brain naturally absorbs the language. That’s why we keep every word inside authentic contexts, using examples and associations to help you understand it and use it flexibly.
Read the FAQ explanation of Comprehensible InputEnglish Brain Route
Cold air brushes my hand as I reach for the door. I push, I pull, I shift my weight, and the latch trembles but won't open. I realize I cannot force it this way, and the feeling tightens in my chest as I adjust my stance and choose another path. The moment teaches me to pause, to set aside the urge and keep moving with a different plan.
Real Context
Cannot is a strong negative form that means to be unable to do something or to lack permission. It is the full form of the contraction can't, and is used in more formal writing or when you want to emphasize inability or rule-based prohibition. You place cannot before a base verb (cannot go, cannot help, cannot speak) and you do not use to. The sense shifts when you compare it with could not (past) or with be unable to: I cannot try right now; I could not try yesterday. In everyday speech, many learners prefer can't, but cannot remains correct and clear in formal contexts or when avoiding ambiguity. Remember pronunciation and stress; practice with different verbs.
Usage Reminders
- Cannot expresses inability or lack of permission and is followed by a base verb (cannot go, cannot see).
- The contracted form can't is very common in speech and informal writing.
- Use cannot in formal writing or when you want to emphasize rule-based prohibition.
- Past tense uses could not or was not able to (I could not go, I was not able to).
- Do not add 'to' after cannot; the base form follows (cannot eat, cannot swim).
Common Misconceptions
- Cannot and can't are interchangeable in all contexts; choose can’t for informal speech and cannot for formal writing.
- May not and cannot express the same idea; may not is a permission/ prohibition nuance, while cannot is inability.
- Be careful not to say 'cannot to' before a verb.
- I cannot means I am unable now, not necessarily in the future.
- Be sure not to confuse 'cannot' with 'can not', which is rarely used except for emphasis or error.
Thinking Differences
This explains to an English learner that the full form cannot is more formal and emphatic than the contracted can't, and that context (formal writing vs. casual speech) guides choice; it also highlights how English marks tense and permission differently than some other languages.
Learning Tips
- Practice using cannot with a variety of verbs to build familiarity.
- Compare examples with can't and be able to to see nuance.
- Note contexts where you should choose formal cannot over informal can't.
- Learn the past tense forms could not / was not able to for real past events.
- Remember, after cannot you use the base form; no to.
- Listen to native speech and observe pronunciation of cannot vs can't.
5-Step Learning Method - Learn English in English
Step 1: Meaning
What is the meaning of 'cannot'?
A.To be able to do something
B.To lack the ability to do something
C.To have the ability to perform
D.To be possible
Step 2: Usage
Which sentence uses 'cannot' correctly?
A.They cannot plays soccer in the rain.
B.I cannot riding my bike to school today.
C.I cannot see you because there is too much light.
D.You cannot to go to the concert.
Step 3: Similar Words
Which word is most similar to 'cannot'?
A.will
B.can
C.must
D.should
Step 4: Opposite Words
What is the opposite of 'cannot'?
A.will not
B.can
C.should not
D.might not
Step 5: Mastery
Can you give an example of a real-life scenario of 'cannot'?
A.You might feel tired after a long day.
B.You are unable to attend the meeting due to a prior commitment.
C.You can join us for dinner if you finish your work.
D.She forgot to bring her umbrella.
Related Listening
🌱 Lite (Beginner)
🔥 Advanced
Want to practice more words?
Download LexiTalk app for personalized learning experience
Download App