Antonym: changeable, inconstant, mutable. Similar words: instant, instantly, consultant, instance, distant, for instance, assistant, substantial. Meaning: ['kɑnstənt /'kɒn-] 
n. 1. a quantity that does not vary 2. a number representing a quantity assumed to have a fixed value in a specified mathematical context. adj. 1. persistent in occurrence and unvarying in nature 2. continually recurring or continuing without interruption 3. steadfast in purpose or devotion or affection 4. uninterrupted in time and indefinitely long continuing.
n. 1. a quantity that does not vary 2. a number representing a quantity assumed to have a fixed value in a specified mathematical context. adj. 1. persistent in occurrence and unvarying in nature 2. continually recurring or continuing without interruption 3. steadfast in purpose or devotion or affection 4. uninterrupted in time and indefinitely long continuing. 
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31. constant dropping wears the stone.
32. He is tired of his wife's constant nagging.
33. I am weary of his constant complaints.
34. Constant dripping wears away the stone.
35. Constant criticism saps you of your confidence.
36. Constant stress has made our nerves brittle.
37. She was a constant generator of story ideas.
38. The baby needs constant supervision.
39. Every member of the organization should be constant to its regulations.
40. She had a constant parade of young men coming to visit her.
41. Outside the tent I could hear the constant drone of insects.
42. The daring of his exploits had been hugely magnified by constant telling.
43. Babies need constant care.
44. This suit has been in constant wear for two years.
45. In cases of severe mental handicap, constant supervision is recommended.
46. The farm was in / under constant requisition as a base for the rescue team.
47. The heavy traffic is a constant source of irritation .
48. The dog has been her constant companion these past ten years.
49. John received constant physical and psychological abuse from his father.
50. The constant threat of danger kept us all on our toes.
51. The level of unemployment remains fairly constant at around 10%.
52. For ten years he had been her constant companion .
53. The family is a constant shear flows, flow of mind wandering forever; love is like a hill endless sand, precipitation is the long-term accumulation of care; family like the night sky the Beidou,[www.Sentencedict.com] guided the lost lamb is the direction to go home.
54. He laboured under the constant misapprehension that nobody liked him.
55. Eva and Paul kept a constant vigil by their daughter's hospital bedside.
56. Fred had been her constant companion for the last six years of her life.
57. The job involved the constant repetition of the same movements.
58. There was a constant stream of visitors to the house.
59. This entrance is in constant use; do not block it.
60. The pages of the dictionary had curled up from constant use.
More similar words: instant, instantly, consultant, instance, distant, for instance, assistant, substantial, construct, substantially, constraint, constitute, construction, constitution, constructing, constitutional, non-stop, monster, stand, install, stand by, stand for, stance, stand up, stand out, important, reluctant, standard, CONS, demonstrate.