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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91) Conversely, disturbed sleep patterns can cause periods to become irregular or stop altogether.
92) It is also wonderfully irregular in grain size, which gives a very natural effect, with odd pebbles here and there.
93) Its somewhat irregular shape and measurements were presumably counteracted as the building rose above ground level.
94) Two years ago, she was hospitalized because of an irregular heartbeat.
95) The weights are marked in braille with irregular bumps that to the uninformed would appear to be defects.
96) I was left with four small boys to bring up and, from the start, maintenance payments were irregular.
97) In women, chronic use of alcohol reduces vaginal response, and it can cause irregular menstruation and induce premature menopause.
98) The above-mentioned species are all suitable for the heated tank,[http://sentencedict.com/irregular.html] but their supplies are irregular.
99) Description: This is an aquatic moss, with irregular branched stems or fronds covered with two rows of spongy leaves.
100) At first sight this might seem very improbable, because such smooth regions would be heavily outnumbered by chaotic and irregular regions.
101) Small and irregular items can be covered with cling film after first spraying with silicon water repellent from an aerosol can.
102) We should expect to see networks wherever we see constant irregular change, and we do.
103) Through the high-powered telescope, they could see that the asteroid was very irregular, and turning slowly end over end.
104) The blade hone and the irregular shapes from the hip bone identify shoulder and sirloin cuts.
105) It is coarse and irregular, involves the face, head, and extremities, and is accentuated by movements.
106) It has, however, a highly irregular shape with bulges and indentations of various sizes, as shown in Fig. 21.3.
107) The irregular inflection will be presented as a headword with a reference to the appropriate root form.
108) The organ is soft and delicate, of irregular shape, branching and finely divided and highlighted throughout by yellow flecks.
109) When we first entered the farm country, the beeps, sparse and irregular, jolted me.
110) In order to escape payment Beamish fled the country and he only returned to Britain at irregular intervals from then on.
111) He became irregular in his sobriety and would launch into disconnected, hortatory speeches about such matters as space exploration.
112) On the other hand, there was no profit in short journeys and irregular runnings of trains at peak times.
113) Washington, who survived the defeat, must have noted the possibilities for irregular warfare.
114) I prayed she hadn't taken one of the narrow lanes that turned off at irregular intervals.
115) But it was not solely the irregular Hutu extremist forces and the Mayi-Mayi that persecuted the civilian population.
116) One reason may be the chronic shortage of funds that requires many rural schools to make up their budgets by irregular means.
117) Each was low and irregular, plain white plaster walls with prominent wooden spars bracing the ceiling and an open stone fireplace.
118) In particular, the spatial irregularity apparent in Fig. 22.8 reflects irregular fluctuations in time.
119) Her rapid pulse, high blood pressure, irregular breathing, and bluish discoloration of the skin all called for life-saving measures.
120) During the eighteenth century the irregular Cossack hosts were gradually brought under control and absorbed into the regular army.
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.