Synonyms for irregular
- adjective
Most common
abnormal occasional unusual strange uneven crooked unpredictable unsystematic
Synonyms by meaning
Adjective
1. Abnormal
abnormal, occasional, unusual, strange, unnatural, aberrant, erratic, unorthodox, eccentric, uncertain, sporadic, variable, rough, odd, improper, anomalous, off-beat, weird, unsteady, different, capricious, queer
2. Uneven
uneven, crooked, asymmetrical, jagged, coarse, unequal, rugged, unsymmetrical, erose US, aerose UK
3. Unpredictable
4. Unsystematic
unsystematic, disorderly, immethodical dated
Other
atypical, illegal, informal, amorphous, casual, sub-standard, temporary, constipated, wanton, heteroclite, unpunctual, salebrous dated
Definitions
- adj. 1
Nonstandard; not conforming to rules or expectations.
- adj. 2
Of a surface, rough.
- adj. 3
Without symmetry, regularity, or uniformity.
- adj. 4
Of a polygon, not regular; having sides that are not equal or angles that are not equal.
Related words
- Word family
- irregularity irregularly irregularness
Example sentences
- strange Press the red button if something strange happens.
- unusual The study by Meyer and his colleagues was unusual.
- occasional Heather regenerates following occasional burning.
- abnormal It's abnormal to have the heart on the right side.
- crooked The plants were growing crooked towards the window.
- uneven It's good for your back to walk on uneven ground.
Popularity over time
| Word | 1850 → 2019 | Trend |
|---|---|---|
| irregular | falling | |
| strange | rising | |
| unusual | steady | |
| occasional | steady | |
| abnormal | steady | |
| crooked | rising |
Use in printed books, per decade from 1850 to 2019.
By length
- 3 letters
- odd1
- 5 letters
- weird1, rough1, queer1, erose
- 6 letters
- casual3, rugged2, uneven3, coarse1, jagged2, wanton2, aerose
- 7 letters
- illegal3, strange1, unusual4, crooked2, erratic3, unequal3
- 8 letters
- variable4, unstable3, informal3, abnormal3, improper3, sporadic3, atypical4, aberrant3, unsteady3, instable
- 9 letters
- different3, temporary4, uncertain3, eccentric3, unnatural4, amorphous3, anomalous4, salebrous
- 10 letters
- occasional4, unorthodox4, disorderly4, capricious3, unpunctual
- 11 letters
- constipated4, heteroclite
- 12 letters
- asymmetrical5, unsystematic, immethodical
- 13 letters
- unpredictable5, unsymmetrical
The small number after each word is its number of syllables (casual3 = 3 syllables).
In other languages
- Français
- irrégulier
- Italiano
- irregolare