Synonym: accidental, chance, informal, natural, unexpected. Antonym: planned. Similar words: casualty, as usual, visual, unusual, persuade, measure up, measure up to, measurement. Meaning: ['kæʒjʊəl] 
adj. 1. marked by blithe unconcern 2. without or seeming to be without plan or method; offhand 3. suited for everyday use 4. occurring or appearing or singled out by chance 5. hasty and without attention to detail; not thorough 6. occuring from time to time 7. characterized by a feeling of irresponsibility 8. natural and unstudied 9. not showing effort or strain.
adj. 1. marked by blithe unconcern 2. without or seeming to be without plan or method; offhand 3. suited for everyday use 4. occurring or appearing or singled out by chance 5. hasty and without attention to detail; not thorough 6. occuring from time to time 7. characterized by a feeling of irresponsibility 8. natural and unstudied 9. not showing effort or strain. 
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1. The boy was cheeky and casual.
2. He tried to look casual.
3. She usually wears smart/casual clothes.
4. They have a casual attitude towards safety .
5. It was just a casual remark—I wasn't really serious.
6. To the casual observer, the system appears confusing.
7. His eyes were angry, though he sounded casual.
8. It's difficult for me to be casual about anything.
9. I bumped into a casual acquaintance in town.
10. He was wearing casual clothes.
11. Casual workers are usually paid by the hour.
12. The guests wore casual clothes.
13. Ellis spoke with a casual indifference that he did not feel.
14. She was a casual acquaintance of my family in Vienna.
15. It was just a casual comment[sentencedict.com], I didn't mean it to be taken so seriously.
16. A casual observer would have taken them to be three men out for an evening stroll.
17. To the casual observer, it would have looked like any other domestic argument.
18. The casual newspaper reader wouldn't like long articles on serious subjects every day.
19. He tried to sound casual, but I knew he was worried.
20. She sounded almost casual.
21. His casual behaviour was wholly inappropriate for such a formal occasion.
21. Wish you can benefit from sentencedict.com and make progress everyday!
22. It became increasingly expensive to hire casual workers.
23. It's obvious even to the casual observer.
24. She had a casual attitude to life.
25. Jean felt more comfortable in casual clothes .
26. We are only casual acquaintances.
27. He wore a casual shirt with an open neck.
28. He dressed quickly in casual clothes.
29. He was wearing casual clothes, not his school ones.
30. She had a purposeful air, and it became evident that this was not a casual visit.
More similar words: casualty, as usual, visual, unusual, persuade, measure up, measure up to, measurement, all of a sudden, case, in case, casino, cash in, in case of, cash in on, manual, actual, sexual, mutual, annual, ritual, in any case, sexually, qualify, annually, virtual, actually, cast aside, in this case, broadcast.