nonlinear

IPA/ˌnɒnˈlɪn.i.ər/
KK[nɑnlˈɪnˌiɚ]IPA/ˌnɑːnˈlɪn.i.ɚ/

nonlinear — adjective

  • nonlinearpositive
  • more nonlinearcomparative
  • most nonlinearsuperlative

1. not forming or following a straight line or a set of connected lines; with turns

1.adjectiveB2
Definition

not forming or following a straight line or a set of connected lines; with turns and curves instead of a direct path.

Example

Kwame traced a nonlinear route through the narrow streets of the old city.

nonlinear route — describes a curving path

The river's nonlinear course made the journey twice as long as expected.

Common collocations
  • nonlinear path
  • nonlinear route
  • nonlinear shape
  • nonlinear arrangement
  • nonlinear course
Synonyms
  • curving

    more general; describes any bent shape, not necessarily the opposite of linear

  • winding

    specifically describes a twisting path or road

  • irregular

    broader; can refer to any uneven shape or pattern

Antonyms

Grammar Patterns

nonlinear + noun

be + nonlinear

Usage Note

This physical sense is less common than the abstract or mathematical uses. It often describes paths, routes, shapes, or layouts that are intentionally curved or irregular.

2. not presented or happening in a clear time‑based or logical order; jumping betwe

2.adjectiveB2
Definition

not presented or happening in a clear time‑based or logical order; jumping between different points in time or different topics.

Example

The film uses a nonlinear timeline, moving between the 1980s and the present day.

nonlinear timeline — jumps between time periods

Lucía's nonlinear thoughts during the meeting jumped from budgets to staffing to office design.

Common collocations
  • nonlinear narrative
  • nonlinear storytelling
  • nonlinear timeline
  • nonlinear thinking
  • nonlinear structure
Synonyms
  • non‑sequential

    more direct synonym, commonly used in computing and storytelling contexts

  • disjointed

    has a negative connotation of confusion; nonlinear can be a deliberate creative choice

  • fragmented

    suggests broken pieces; stronger sense of incompleteness than nonlinear

Antonyms

Grammar Patterns

nonlinear + noun

be + nonlinear

Usage Note

This sense is very common in literary and film criticism. It describes narratives, timelines, or thought processes that deliberately avoid a straight chronological sequence.

Common Mistakes

The movie's nonlinear story was confusing because it had no beginning.
The movie's nonlinear story was intentionally structured out of chronological order.
'nonlinear' does not mean 'without a beginning'; it means the events are not arranged in time order.

3. describing a connection between two things where a change in one does not cause

3.adjectiveB2
Definition

describing a connection between two things where a change in one does not cause a proportional or equal change in the other, so their relationship is complex rather than simple.

Example

Population growth and food supply often have a nonlinear relationship in developing countries.

nonlinear relationship — change is not proportional

Talia studied the nonlinear effects of temperature on the growth of rice plants.

Common collocations
  • nonlinear relationship
  • nonlinear effect
  • nonlinear change
  • nonlinear response
  • nonlinear growth
Synonyms
  • disproportionate

    emphasises the unequal ratio; more negative in tone

  • complex

    broader term; nonlinear relationships are one kind of complex relationship

Antonyms

Grammar Patterns

nonlinear + noun

be + nonlinear

Usage Note

Frequently used in economics, biology, and social sciences to describe systems where simple cause‑and‑effect does not apply. Often appears paired with its opposite: 'linear vs. nonlinear'.

Common Mistakes

The cost increased in a nonlinear way, so it doubled each time.
The cost increased exponentially, which is one type of nonlinear growth.
'nonlinear' includes many patterns; 'exponential' is just one specific type.

4. relating to a mathematical equation or function whose graph forms a curve rather

4.adjectiveC1
Definition

relating to a mathematical equation or function whose graph forms a curve rather than a straight line, typically because the variables are not directly proportional.

Example

Karim solved a nonlinear equation to calculate the satellite's orbit around Earth.

nonlinear equation — mathematical expression that curves on a graph

Nonlinear functions produce curves on a graph, while linear ones produce straight lines.

nonlinear functions … curves — contrast with linear = straight lines

Common collocations
  • nonlinear equation
  • nonlinear function
  • nonlinear system
  • nonlinear model
  • nonlinear dynamics
Synonyms
  • curvilinear

    more formal synonym used mainly in geometry and statistics

  • polynomial

    a specific type of nonlinear function; not all nonlinear functions are polynomial

Antonyms
  • linear

    forming a straight line on a graph

  • proportional

    directly proportional relationship between variables

Grammar Patterns

nonlinear + noun

be + nonlinear

Usage Note

Standard term in mathematics and physics. The opposite — 'linear' — is much more common in everyday language. In math contexts, 'nonlinear' is often used as a technical classifier rather than a descriptive adjective.

5. relating to a digital‑media editing technique that lets you go straight to any p

5.adjectiveB2
Definition

relating to a digital‑media editing technique that lets you go straight to any part of a file and change it, without working through the file from start to finish.

Example

Rin edited the video using nonlinear software on her laptop.

nonlinear software — digital editing without fixed order

Nonlinear editing allows you to change the middle scene without touching the beginning.

Common collocations
  • nonlinear editing
  • nonlinear software
  • nonlinear tool
  • nonlinear workflow
  • nonlinear system
Synonyms
  • random‑access

    very close synonym; emphasises the ability to reach any point without sequential work

  • digital

    broader term; not all digital editing is nonlinear, though most modern tools are

Antonyms
  • linear

    working through a file in fixed order

  • tape‑based

    refers to older linear editing methods using physical tape

Grammar Patterns

nonlinear + noun

Usage Note

This sense applies almost exclusively to digital media production. 'Nonlinear editing' (often abbreviated NLE) is the standard term in the film and video industry. The opposite is 'linear editing,' which involved working through tape in sequence.

Common Mistakes

I used a nonlinear editor to cut the film, so I had to watch it from start to finish.
I used a nonlinear editor to cut the film, jumping straight to the scene I wanted to fix.
'nonlinear' means you can access any part directly.

Word family

  • linear
    adjectiveB2
  • nonlinearity
    nounC1
  • linearly
    adverbB2
  • nonlinearity
    noun (count / uncount)C1
  • linearize
    verbC1

Synonym discussion

Sense: adjective/3

These words are often confused with 'nonlinear' in academic and business contexts. 'Disproportionate' focuses on the unequal ratio itself and often carries a negative tone — e.g., a disproportionate tax burden on the poor. 'Complex' is much broader; a nonlinear relationship is complex, but not all complex relationships are nonlinear (some are just intricate but still proportional). 'Exponential' is a specific type of nonlinear growth where the rate doubles — exponential change is always nonlinear, but the reverse is not true. 'Non‑sequential' overlaps with sense 2 (time order) rather than sense 3 (rate of change). For example, 'the nonlinear relationship between stress and performance means that moderate stress helps, but too much stress hurts performance — that isn't exponential or merely complex; it's specifically nonlinear.

disproportionate ↗complex ↗exponential ↗non‑sequential ↗

Common collocations

Nouns

Adverbs

  • highly nonlinear
  • strongly nonlinear
  • inherently nonlinear
  • mildly nonlinear

Phrases

  • linear vs. nonlinear
  • nonlinear in nature
  • highly nonlinear system

Prepositions

  • nonlinear in
  • nonlinear with respect to

Etymology

LatinEnglish

Formed in the 19th century by combining the prefix 'non‑' (meaning 'not', from Latin 'non') with 'linear' (from Latin 'linearis', meaning 'of or belonging to a line', itself from 'linea' meaning 'line, string'). The mathematical sense appeared in the early 20th century, and the editing sense emerged with digital technology in the 1990s.