Four Cups definitions

Rider-Waite: 4 of Cups

A young man is seated under a tree and contemplates three cups set on the grass before him; an arm issuing from a cloud offers him another cup. His expression notwithstanding is one of discontent with his environment.

Weariness, disgust, aversion, imaginary vexations, as if the wine of this world had caused satiety only; another wine, as if a fairy gift, is now offered the wastrel, but he sees no consolation therein. This is also a card of blended pleasure.

Additional Meanings: Contrarieties.

Reversed Card meanings

Novelty, presage, new instruction, new relations.

Additional Meanings: Presentiment.

Book of Thoth - Luxury - 4 of Cups

The Four of Cups is called Luxury.
The masculine nature of fire permits the Four of Wands to appear as a very positive and clear-cut conception. The weakness in the element of water threatens its purity; it is not quite strong enough to control itself properly; so the Lord of Pleasure is a little unstable. Purity has somehow been lost in the process of satisfaction.

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Golden Dawn - Lord of Blended Pleasure

The gentle care of the mother; a desire to return to safe haven; a desire to nurture; over-protectiveness imposing unnecessary limits.

Mathers: 4 of Cups

Ennui, Displeasure, Discontent, Dissatisfaction.

Reversed

Acquaintance, Conjecture, Sign, Presentiment.

Etteilla: 4 of Cups

Weariness, Displeasure, Discontentment, Disgust, Aversion, Enmity, Hate, Horror, Anxiety, Mental Suffering, Mild Dejection, Vexation, Painful, Annoying, Unpleasant. Distressing, Troubling.

Reversed Card meanings

New Instruction, New Light. Sign, Indication, Conjecture. Omen, Presage. Premonition, Prognostication, Prediction, Novelty.

Thierens: 4 of Cups

TRADITION

Annoyance, aversion, disgust, affliction, discontent (with his environment), satiety; blended pleasure. Reversed: News, presage, new light on things, novelty, new acquaintances made, etc.

THEORY

The Water of the soul on the Twelfth house, which rules many changes, and adverse influences and, in general, the surroundings so far as they are not yet mastered, and therefore inimical. Indeed this house brings much affliction in matters of the world; materially it is anything but successful and in this respect will certainly bring annoyances, but on the other hand new knowledge of Nature's wonders is revealed in this house. Discontent with environment, certainly, but at the same time it shows the querent throwing his future on the waters of new adventure, leaving home and family to wander forth towards new experiences, enlarging the horizon of his views. There may be some ailment of the soul, however, in this house and in very weak cases alienation even. Sentiments not reciprocated, nor understood. A feeling of being outside one's proper environment.

There may be encounters with strangers or foreigners, and discoveries, as results of discontent or dissatisfaction with present conditions. So in relation to these conditions it may mean: failing to understand or to appreciate things as they are, estrangement of the world, which may lead to seclusion; secluded feelings.

CONCLUSION

Discontent with present conditions or environment; estrangement, unrest, aversion, troubles, disgust; discord, failing to understand people or to make oneself understood. New discoveries, researches in unknown countries or territories, meeting with strangers. Instability, changes, generally for the worse in a material sense, but having some distant aim. At war with current opinions. Better to keep silent than to talk, because one will certainly be misunderstood. There may be "imaginary vexations." (W.) Seclusion; alienation.