1.
the quality of being honest and having strong moral principles; moral uprightness.
"he is known to be a man of integrity"
Opposite:
Dishonesty
2.
the state of being whole and undivided.
"upholding territorial integrity and national sovereignty"
Opposite:
Division
3.
the condition of being unified, unimpaired, or sound in construction.
Opposite:
Fragility
Etymology: late Middle English (in integrity (sense 2)): from French intégrité or Latin integritas, from integer ‘intact’