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Moon opposite Moon is a complicated aspect in synastry. It is a tense aspect, but if managed well, it can indicate two people who balance and complement each other.
The Moon is important in synastry. It is one of the two Luminaries. Unlike the other planets that govern particular areas of life, the Luminaries are involved in everything that we do.
The Moon operates on a day-to-day level, and it plays a key role in our routines and unconscious habits and attitudes. Along with Mercury, it also plays a key role in communication.
In some ways, an opposition is a very difficult aspect. The meaning is clear from its name. Yet, this is also an aspect of polarity and balance, which can be quite important in relationships.
The adage “opposites attract” rings true in astrology.
Moon Opposite Moon in Synastry
The Moon opposite Moon can operate in different ways in synastry.
It could prevent a relationship from forming at all. It could also make for a difficult and volatile relationship. Yet, it can also signify a deep relationship that is fated in some way.
The reason for this variation is the deep nature of Moon contacts between charts, and the double nature of the aspect of an opposition.
When this aspect is present in synastry, two people will react to almost everything in opposite ways. This reaction will be natural and instinctive, which will make it difficult to resolve.
If the two learn to understand and accept their differences, they can balance and complement each other. Otherwise, they will find themselves in constant conflict.
While some of the effects of Moon opposite Moon will depend on the willingness of the two to work to accept each other, it will be important to consider the other synastry aspects between the two. These will show whether they will be able to find common ground.
There are a couple of sign combinations that will change the nature of this aspect.
Taurus and Scorpio
The Moon is exalted in Taurus, which means that it is in its fall in Scorpio. This has the potential to either make the opposition more difficult or more beneficial.
In this case, the person whose Moon is in Taurus is more comfortable with their emotions and their lunar nature than the person whose Moon is in Scorpio. They will tend to feel a stronger bond and desire for closeness.
The person whose Moon is in Scorpio will have more complicated emotions. They will tend to both draw closer and pull away, sometimes at the same time.
For this relationship to work, the person whose Moon is in Scorpio will need to learn from the peaceful nature of the other person rather than draw them into their own storms.
Cancer and Capricorn
The Moon rules Cancer, so is in detriment in Capricorn. As in the case of Taurus and Scorpio, this means that one person’s lunar nature is stronger and healthier than the other.
The Moon in Capricorn tends to be a bit cold. It is focused on practical matters and can forget about tenderness and softness.
If the person with the Moon in Capricorn can learn to appreciate and relax in the nurturing domestic nature of the person with the Moon in Cancer, they will soften and heal.
Otherwise, the relationship could become a constant struggle between the two, meeting neither of their needs.
House Position
In addition to considering the special sign combinations, it will be important to consider what houses the Moon occupies in each other’s charts.
For more information, see:
Moon in Houses Synastry Meanings: 1st through 12th House
Man’s Moon Opposite Woman’s Moon Relationship
In synastry, Moon opposite Moon has the greatest potential to be helpful and healing in a romantic relationship. Alternatively, it can be the most problematic.
This aspect can generate a great deal of physical chemistry between two people. They may feel an instant attraction for one another.
Yet, as the relationship becomes closer, they will become more and more aware of their differences. At this point, they can choose to accept and appreciate their differences, or the relationship could fall apart.
If they do choose to accept and appreciate their differences, they will find that they complement each other. They will each be strong where the other is weak.
This could become a deep bond if they let it and do not get caught up in the conflicts that can also occur with this aspect.
Moon Opposite Moon in Friendship
Moon opposite Moon could prevent a friendship from forming or deepening. If a friendship does form, the two will have already learned to accept their differences to a certain extent.
These friends will never see things in quite the same way, and it will be clear to all how different they are. People may wonder how they became friends in the first place.
Yet, they will be quite good for each other. In particular, they will be able to give each other very good advice. They will be able to see things from a different perspective.
How to Tell if the Moon is Opposite the Moon in Synastry
Each sign has another sign that is its polar opposite. The signs with their opposites are shown in the graphic below:

If two people have the Moon in signs that are opposite each other, than this aspect will have some influence over their relationship.
Moon opposite Moon will be at full strength if the aspect is within twelve degrees of being exact. The closer the aspect is, the stronger it will be. Unfortunately, it will also be more difficult and have greater potential to generate conflict.
If the Moon is within twelve degrees of an opposition from signs that are not opposite each other, this will complicate the aspect quite a bit.
In such a case, the planets will be in signs that have no aspect with one another and thus cannot understand each other at all.
This will bring all of the tension and conflict, but it will not have the benefit of any of the positive qualities of this aspect.
Conclusion
Moon opposite Moon can be a beneficial aspect in synastry, but only if two people are willing to accept and appreciate their differences.
Otherwise, it can be a source of constant conflict and could prevent a relationship from forming in the first place.
This aspect will operate most powerfully in a romantic relationship, for good or for ill.