caustic - Master This Word
Master this word with our 5-step learning method – Learn English in English
caustic Word Meanings
- able to burn or corrode organic tissue; sarcastic in a cutting way.
- involving a very strong reaction or criticism.
- a substance that can destroy or damage living tissue.
caustic Example Sentences
Example sentences are the start of understanding. Don't rush to memorize. First feel how the word works in a sentence.
caustic Phonetic & Pronunciation
UK
/ˈkɔːstɪk/
US
/ˈkɔstɪk/
caustic Word Etymology
caustic = caust- (burn) + -ic (related to). Originating from Greek 'kaustikos' → Latin 'causticus' → Old French 'caustique' → English. Imagine a chemical spill that smolders and burns away everything it touches, leaving a charred mark of its corrosive power.
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 InputReal Context
Caustic is an English adjective with two main senses. Literally, something caustic can burn or corrode organic tissue, as in a caustic chemical such as sodium hydroxide. Figuratively, a caustic remark or tone is harshly critical, biting, or sarcastic. The word comes from Greek kaustikos meaning 'burning.' In everyday use, keep the physical and figurative meanings distinct; do not assume caustic always means extremely negative in a humorous sense. Non-chemical contexts often use 'caustic' to emphasize severity rather than cleverness. Learners sometimes confuse 'caustic' with 'causal' or mispronounce it as 'coast-ik'.
Usage Reminders
- Remember: caustic has both chemical and figurative uses. Pronounce as kaw-stik. Use the chemical sense for substances that burn. Use the figurative sense for sharp criticism. Do not over-applies to mild sarcasm. Context matters for tone.
Common Misconceptions
- Caustic always means sarcasm (it can be chemical).
- Caustic remarks are witty rather than harsh.
- Caustic cannot describe safe or neutral contexts.
- Assuming caustic is neutral humor.
- Mispronouncing as 'coast-tik'.
Thinking Differences
Explain to an English speaker: caustic bridges two worlds—science and sharp wit. Learners often overemphasize the literal chemistry sense and underuse the figurative sense, or fear using it in polite contexts because of its harsh tone.
Learning Tips
- Practice both senses with science and literature contexts.
- Notice collocations: caustic substance, caustic remark, caustic humor.
- Record native examples to hear natural usage.
- Phonetic practice: kaw-stik, not coast-ik.
- Compare with similar words like corrosive and sardonic to avoid confusion.
- Check context before judging tone.
5-Step Learning Method - Learn English in English
Step 1: Meaning
What does the word 'caustic' mean?
A.Sweet
B.Bitter
C.Salty
D.Sour
Step 2: Usage
Which of the following sentences uses 'caustic' correctly?
A.The caustic watermelon was refreshing.
B.The caustic taste of the cake was delightful.
C.His caustic words were filled with love.
D.She had a caustic personality that drove people away.
Step 3: Similar Words
Which word is a synonym of 'caustic'?
A.Kind
B.Harsh
C.Gentle
D.Friendly
Step 4: Opposite Words
What is an antonym of 'caustic'?
A.Witty
B.Sharp
C.Pungent
D.Mild
Step 5: Mastery
In what real-life context would you use the word 'caustic'?
A.In talking about a sweet dessert
B.In discussing a peaceful situation
C.In complimenting someone's kindness
D.In describing a bitter argument
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