imperceptible
gb/ˌɪmpɚsˈɛptɪbəl/ us/ˌɪmpɚsˈɛptɪbəl/
C1
英语
义项
0 个义项
adjective
formal
C1
property
1
too slight to notice
So small or subtle that people cannot notice it.
用法模式：
imperceptible (to [someone])
常见错误：
Learners sometimes limit it to vision only; it can refer to any sense or to detection (e.g., changes, differences, sounds).
近义词
unnoticeable (Direct and common; emphasizes that people don’t notice it.)
|
undetectable (Stronger; suggests even careful checking or instruments may not find it.)
|
barely perceptible (Similar meaning; suggests it can be noticed, but only just.)
反义词
noticeable (Easy to observe or pick up.)
|
obvious (Very clear and hard to miss.)
|
perceptible (Able to be noticed or detected.)
搭配
imperceptible change
|imperceptible difference
|imperceptible shift
|imperceptible movement
|imperceptible pause
|imperceptible smile
|imperceptible tremor
|imperceptible rise
|imperceptible variation
|imperceptible improvement
主题
perception
|description
例句
- There was an imperceptible hesitation before she answered.
- The lighting changed in an imperceptible way as the scene shifted.
- At first the pain relief was imperceptible, but it grew over time.
学习者例句
- The difference is imperceptible.
- His smile was almost imperceptible.
adjective
formal
C1
property
2
happening too gradually to notice
Changing so slowly that people do not notice it.
用法模式：
imperceptible [change/increase/decline]
常见错误：
Learners sometimes use it for any slow change; it usually means the change is not noticed as it happens.
近义词
gradual (Simply means slow; does not necessarily imply ‘not noticeable’.)
|
incremental (Step-by-step change; can be measurable even if small.)
|
subtle (Hard to notice; not necessarily related to speed.)
反义词
sudden (Happening quickly, often unexpectedly.)
|
abrupt (Sharp, clearly noticeable change.)
搭配
imperceptible increase
|imperceptible decline
|imperceptible growth
|imperceptible progression
|imperceptible improvement
|imperceptible deterioration
|imperceptible rise
|imperceptible shift
|imperceptible transition
|imperceptible fading
主题
time
|change
例句
- The days became longer by an imperceptible amount each week.
- Her confidence grew in imperceptible steps during the course.
- The company’s influence expanded through imperceptible changes in policy.
学习者例句
- The change was imperceptible at first.
语法
词典原形
imperceptible
IPA
GB/ˌɪmpɚsˈɛptɪbəl/
US/ˌɪmpɚsˈɛptɪbəl/
音节与重音
im - per - cept - ible （4 个音节）
Stress on 2nd syllable (per)
词形变化
Adjective
- Base: imperceptible
词族
Core family
Related words
perceptive
adjective C1
perceptibly
adverb
Negative and opposite forms
imperceptibly
adverb C1
unperceptive
adjective
Advanced or less common
perceptual
adjective
misperceive
verb
misperception
noun
相关表达
almost imperceptible
1/ˈɔlmˌoʊst ˌɪmpɚsˈɛptɪbəl/
fixed phrase
barely noticeable
Very, very hard to notice.
例句
- He gave an almost imperceptible nod to signal agreement.
- There was an almost imperceptible change in her tone.
- The boat drifted forward with an almost imperceptible movement.
imperceptible to the naked eye
1/ˌɪmpɚsˈɛptɪbəl tə ðə nˈeɪkɪd ˈaɪ/
fixed phrase
formal
not visible without equipment
Not possible to see without special tools.
例句
- The crack was imperceptible to the naked eye but showed up in the scan.
- These organisms are imperceptible to the naked eye and require a microscope.
- The color shift is imperceptible to the naked eye unless you compare the samples side by side.