Synonym: cause, derivation, origin, source. Antonym: branch. Similar words: roots, uproot, rooted, rooting, rootless, take root, beetroot, grass roots. Meaning: [ruːt] 
n. 1. (botany) the usually underground organ that lacks buds or leaves or nodes; absorbs water and mineral salts; usually it anchors the plant to the ground 2. (linguistics) the form of a word after all affixes are removed 3. the place where something begins, where it springs into being 4. a number that when multiplied by itself some number of times equals a given number 5. the set of values that give a true statement when substituted into an equation 6. someone from whom you are descended (but usually more remote than a grandparent) 7. a simple form inferred as the common basis from which related words in several languages can be derived by linguistic processes 8. the part of a tooth that is embedded in the jaw and serves as support. v. 1. take root and begin to grow 2. come into existence, originate 3. plant by the roots 4. dig with the snout 5. take sides with; align oneself with; show strong sympathy for 6. become settled or established and stable in one's residence or life style 7. cause to take roots.
n. 1. (botany) the usually underground organ that lacks buds or leaves or nodes; absorbs water and mineral salts; usually it anchors the plant to the ground 2. (linguistics) the form of a word after all affixes are removed 3. the place where something begins, where it springs into being 4. a number that when multiplied by itself some number of times equals a given number 5. the set of values that give a true statement when substituted into an equation 6. someone from whom you are descended (but usually more remote than a grandparent) 7. a simple form inferred as the common basis from which related words in several languages can be derived by linguistic processes 8. the part of a tooth that is embedded in the jaw and serves as support. v. 1. take root and begin to grow 2. come into existence, originate 3. plant by the roots 4. dig with the snout 5. take sides with; align oneself with; show strong sympathy for 6. become settled or established and stable in one's residence or life style 7. cause to take roots. 
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31. What is/lies at the root of the problem is their lack of interest.
32. A friend sent me a root from Mexico, and I hope to naturalize it.
33. In the past the root of this plant was thought to possess magical powers which could cure baldness.
34. So what's the root cause of his anxiety?
35. 2 is the fourth root of 16.
36. His selfishness was the root of trouble.
37. The square root of 49 is 7.
38. Root ginger has been used medicinally for centuries.
39. I'll root out the photo for you.
40. It shouldn't take too long to root him out.
41. The principal promised to root out the troublemakers.
42. The root of the word 'sitting' is 'sit'.
43. What is the square root of 9?
44. The square root of 64 is 8 .
45. We moored the boat to a large tree root.
46. The government determined to root out corruption.
47. Root the cuttings in a heated propagator.
48. Five is the square root of 25.
49. New shrubs will root easily in summer.
50. "Gratification" and "gratitude" have the same etymological root.
51. Root this bundle of peonies in the garden.
52. The trees failed to root and so died.
53. that complacency is at the root of our troubles.
54. Communism has never really taken root in England.
55. The square root of nine is three.
56. The two languages share a common root.
57. He took hold of the plant's root and pulled.
58. He sees money as the root of all evil.
59. We got to the root of the problem.
60. Kevin buys a root beer.