Reading Theme:
Constant: Definition, Usage & Key Differences (2 meaning)
Meaning 1：continuous (constant)
constant
/ˈkɒn.stənt/
adj.
Something that happens all the time, without stopping or changing.
continuous
➕
/kənˈtɪn.ju.əs/
adj.
Unchanging and ongoing over time.
📘 Details & Usage
📖 Root Explanation
From Latin 'constantem' (firm, steadfast), combining 'con-' (together) + 'stare' (to stand).
💡 Mnemonic
Think CON (together) + STANT (standing) → standing together firmly over time, unchanging.
📖 Example
The constant hum of the air conditioner helps him focus while studying.
The ongoing, unchanging low sound from the air conditioner aids his concentration during study sessions.
🔗 Collocations
constant pressure – continuous and unchanging force or stress
constant temperature – a steady, unvarying degree of heat
constant reminder – something that continually brings a thought or memory to mind
🔄 Synonyms
continuous (adj.) – forming an unbroken whole; without interruption.
perpetual (adj.) – never ending or changing.
incessant (adj.) – (of something regarded as unpleasant) continuing without pause or interruption.
🚫 Antonyms
intermittent (adj.) – occurring at irregular intervals; not continuous or steady.
sporadic (adj.) – occurring at irregular intervals or only in a few places; scattered or isolated.
variable (adj.) – not consistent or having a fixed pattern; liable to change.
🌱 Derivatives
constantly (adv.) – continuously over a period of time; always.
constancy (n.) – the quality of being faithful and dependable, or the state of being unchanging.
📖 Cultural Story
Derived from Latin 'constantem', meaning steadfast or unwavering. In science and mathematics, it famously denotes a value that does not change, like the gravitational constant or mathematical constants (e.g., π).
Meaning 2：unchanging (constant)
constant
/ˈkɒn.stənt/
adj.
Describing someone who is always loyal and supportive, or something that never changes.
unchanging
➕
/ʌnˈtʃeɪn.dʒɪŋ/
adj.
Remaining the same and reliable over time, especially in character or support.
📘 Details & Usage
📖 Example
Throughout all the ups and downs of starting the business, she remained my constant supporter and friend.
During all the challenges and successes of launching the company, she was my unwavering supporter and friend.
🔗 Collocations
constant companion – a person or thing that is always present with someone
constant support – steady and reliable help or encouragement
constant factor – an element that remains the same in all situations
🔄 Synonyms
steadfast (adj.) – resolutely or dutifully firm and unwavering.
unwavering (adj.) – steady or resolute; not wavering.
faithful (adj.) – remaining loyal and steadfast.
🚫 Antonyms
fickle (adj.) – changing frequently, especially as regards one's loyalties, interests, or affection.
unreliable (adj.) – not able to be relied upon.
inconstant (adj.) – frequently changing; variable or irregular.
🌱 Derivatives
constancy (n.) – the quality of being faithful and dependable.
inconstancy (n.) – the quality of being changeable, especially in loyalties or affections.
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