Synonym: abnormal, distorted, erratic, rough, uneven, unnatural. Antonym: regular. Similar words: regular, regularly, at regular intervals, regulate, regulator, regulatory, regulation, triangular. Meaning: [ɪ'regjələ(r) /-gjʊl-] 
n. 1. a member of an irregular armed force that fights a stronger force by sabotage and harassment 2. merchandise that has imperfections; usually sold at a reduced price without the brand name. adj. 1. contrary to rule or accepted order or general practice 2. (of solids) not having clear dimensions that can be measured; volume must be determined with the principle of liquid displacement 3. not occurring at expected times 4. (used of the military) not belonging to or engaged in by regular army forces 5. deviating from normal expectations; somewhat odd, strange, or abnormal 6. lacking continuity or regularity 7. of a surface; not level or flat 8. independent in behavior or thought.
n. 1. a member of an irregular armed force that fights a stronger force by sabotage and harassment 2. merchandise that has imperfections; usually sold at a reduced price without the brand name. adj. 1. contrary to rule or accepted order or general practice 2. (of solids) not having clear dimensions that can be measured; volume must be determined with the principle of liquid displacement 3. not occurring at expected times 4. (used of the military) not belonging to or engaged in by regular army forces 5. deviating from normal expectations; somewhat odd, strange, or abnormal 6. lacking continuity or regularity 7. of a surface; not level or flat 8. independent in behavior or thought. 
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121) Her hands had been clammy and her breathing irregular, but a small brandy had helped to settle her nerves.
122) College teachers may have unusual contracts of employment that means they often work irregular hours.
123) But certainly hunky, with strong, irregular features, a full, jutting lower lip and very blue eyes.
124) The more irregular the figure, the higher the score or perhaps one was shooting for a low score?
125) Jagged irregular vibrations up the line suggest gravel and stones, small regular vibes mean fine gravel or sand.
126) Large amounts of strong coffee can cause insomnia and, in extreme cases, palpitations and irregular heartbeats.
127) I let out an involuntary gasp. Electric lights sprang on all over the ceiling in an irregular pattern.
128) For planet means wanderer,[http://sentencedict.com/irregular.html] an object whose movements are irregular and subject to change without notice.
129) The clerk said this was highly irregular, but I insisted.
130) He worked irregular hours.
131) You learn how to generate nouns and verbs but Navajo is very irregular.
132) He has none of the talents requisite for the Orator, but in public debate is confused and irregular.
133) For many seasonal workers, the biggest drawback can be the irregular hours and erratic schedules.
134) The Cliff Palace was cut into the rock, round rooms and towers, walls with irregular openings.
135) A flat, broad irregular, solid mass echoic pattern.
136) It was one of those delightfully irregular houses.
137) Can I use Ovulation Calendar if cycle is irregular?
138) Menses become irregular and heavy breakthrough bleeding can occur.
139) The muddy water has a choppy and irregular surface.
140) Beyond the boundary layer, the motion is highly irregular.
141) Furthermore, the work flow was irregular.
142) Soundex searches allow for irregular spellings, particularly in English.
143) Smoking could lead to irregular heartbeats.
144) Japanese Yellow Bunting (IUCN Vulnerable) is scarce and irregular spring passage migrant. Besides Deep Bay area, Long Valley is one of its favourite sites.
145) Haematoma in the abdominal cavity was found as an irregular echo free zone between left hepatic lobe and the transplanted pancreas.
146) Far more complex is Mozart, who writes what seems to be an irregular phrase structure on the surface, which transforms a hidden regularity.
147) The nuclei are large, irregular, hyperchromatic, and show prominent nucleoli.
148) Chinese Gardens have irregular layout, density and spacing, far and near, with garden in garden. Variational space sequences become gurgitation and constringency of the rhythm.
149) Edged polished glass , glass grooving , hole boring, Irregular shaped glass, etc.
150) Acid corrosion could be used for tolerance adjustment of irregular core and core rod, replacing difficult operation of tolerance adjustment by machining.
More similar words: regular, regularly, at regular intervals, regulate, regulator, regulatory, regulation, triangular, irrelevant, irreverent, irrevocable, irreverence, irrespective of, coagulate, secular, popularity, tabula rasa, particular, spectacular, in particular, particularly, engulfed, barrel, marred, regain, arrest, arrear, region, regime, regard.