IN - Introverted Intuition

Superior Function

Uses the objective situation in the interests of the inner understanding.

Regards the immediate situation as a prison from which escape is urgently necessary and aims to escape through some sweeping change in the subjective understanding of the objective situation.

Receives its impetus from outer objects but is never arrested by external possibilities, being occupied rather by searching out new angles for viewing and understanding life.

May be creative in any field: artistic, literary, scientific, inventive, philosophical, or religious.

Finds self-expression difficult.

Finds its greatest value lies in the interpretation of life and the promotion of understanding.

Requires the development of balancing judgment not only for the criticism and evaluation of intuitive understanding but to enable it to impart its visions to others and bring them to practical usefulness in the world.

Myers, "Gifts Differing: Understanding Personality Type"

Introverted Intuition (Ni) collects conscious and subconscious information,
and then synthesizes it to produce convergent impressions, insights,
answers, and theories. It sees deep causes, patterns, and laws underlying
sense data. It is characteristically penetrating and insightful.

A.J. Drenth, "My True Type: Clarifying Your Personality Type, Preferences & Functions"

Visionary Ni:

Stick to a singular vision of the future to improve self and society. Be certain of a few compelling insights. Don't let go or water down. Turn realizations into principles. Apply many complex concepts. Act as a guiding spirit. 

Oracle Ni:

Hold lightly many intercorrelated insights. Connect to many facets of the archetypal world. Open to transformation. Respond to other's questions, and innovate for the group. Cultivate an aesthetic or spiritual practice. 

Dario Nardi, The Magic Diamond: Jung's 8 Paths For Self-Coaching

Inferior Function

What exactly is Dominant Ni repressing Inferior Se?

Dominant Ni repressing Inferior Se is a type that prioritizes the symbolism and underlying meaning of the object, rather than perceiving it as the object itself. It favors the symbolism and its personal, inner vision over the present moment. They repress objective realism and concrete reality in favor of the abstract and metaphorical sense. It focuses on a vision, a meaning, an abstraction over but remain unadapted to the present reality. 

How does Inferior Se play out?

Like extraverted intuition, the more sensation gets repressed, the more it will manifest itself in the form of compulsions and hypochondria. It gives rise to compulsive sensations whose excessive dependence on the object contradicts the conscious attitude. Inferior sensation takes the form of primitive and instinctual ways. One of the characteristics of Inferior Se playing out on INTJs and INFJs is when they feel hypochondriacal and feel like the objective world, moment, and reality is against them. 

Quote by Carl Jung:

Through this realization he feels bound to transform his vision into his own life. But since he tends to rely most predominantly on his vision, his moral efforts become one-sided; he makes himself and his life symbolic—adapted, it is true, to the inner and eternal meaning of events, but unadapted to present-day reality. He thus deprives himself of any influence upon it because he remains uncomprehended. His language is not the one currently spoken—it has become too subjective. His arguments lack the convincing power of reason. He can only profess or proclaim. His is “the voice of one crying in the wilderness."

What the introverted intuitive represses most of all is the sensation of the object, and this colours his whole unconscious. It gives rise to a compensatory extraverted sensation function of an archaic character. The unconscious personality can best be described as an extraverted sensation type of a rather low and primitive order. Instinctuality and intemperance are the hallmarks of this sensation, combined with an extraordinary dependence on sense-impressions. This compensates the rarefied air of the intuitive’s conscious attitude, giving it a certain weight, so that complete “sublimation” is prevented. But if, through a forced exaggeration of the conscious attitude, there should be a complete subordination to inner perceptions, the unconscious goes over to the opposition, giving rise to compulsive sensations whose excessive dependence on the object directly contradicts the conscious attitude. The form of neurosis is a compulsion neurosis with hypochondriacal symptoms, hypersensitivity of the sense organs, and compulsive ties to particular persons or objects.

References

https://watchwordtest.com/types

Psychological Types by Carl Jung