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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61. I'm tired of your constant complaints; go away and leave me in peace!
62. Babies need constant attention.
63. Throughout the house, the views are a constant source of surprise and delight.
64. My life has been music, and a constant search for it has been the mainspring of my life.
65. An absolute constant is fixed and can not be changed.
66. There is no absolute success in the world, only constant progress.
67. We got used to the constant noise of the traffic.
68. Since the accident, the boy's parents have kept a constant vigil at his bedside.
69. I had the constant temptation to look out of the window.
70. I was victimized the whole evening by his constant chatter.
71. All know that the only constant in the world are always changing.
72. To learn to be just and constant, not just is sui Hui, not constant retreat.
73. The good in him was a constant variance with the bad.
74. The building work is creating constant noise, dust and disturbance.
75. all know that the only constant in the world are always changing .
76. I'm exhausted from the constant friction between my boss and my colleagues.
77. We were under constant fire from enemy snipers.
78. There was constant jeering and interruption from the floor.
79. Her constant nagging is beginning to get to him.
80. Jane's constant chatter was annoying him.
81. He matured his novel by constant revision.
82. travelling at a constant speed of 50 m.p.h.
83. The temperature must be kept constant.
84. He's in constant need of treatment.
85. I'm sick and tired of your constant complaints.
86. I got sick of her constant nagging.
87. There was constant background noise from the motorway.
88. Their son is a constant headache to them.
89. The average speed of the winds remained constant.
90. Ross was his most constant and loyal friend.
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.