Manners 
To dream of a well-mannered person implies that an issue you believed to be impossible to resolve will actually prove to be much easier.
To see an ill-mannered person indicates that disharmony between you and a partner will prevent you from completing a project.
Mansion
To dream of a mansion represents your ability to achieve elevated goals and spiritual discovery. Perhaps your present position in life is stagnant and not progressing in the way you desire.
Manatee
To dream of swimming with a manatee indicates a warm and gentle personality.
Multiple manatees suggest it may be time for some rest and relaxation, and possibly even a trip to a warmer climate. There is also a suggestion of a little sadness.
To dream of a manatee mother and baby advises you to be loving and soft to yourself at this time.
Manicure
To dream that you are getting a manicure symbolizes fascination and allure. You want to be noticed and praised for a task that you have completed. Perhaps you are trying to communicate your creativity via some project you are undertaking.
Mantilla
To dream of a mantilla indicates that you will embark on an unscrupulous or negative endeavor and suffer disgrace and humiliation as a result.
Hairpiece
To dream that you are wearing a hairpiece suggests a level of deceit or misdirection in your life. You could be claiming other people's ideas as your own.
To dream that you lost your hairpiece indicates that you're at the earliest stages of forgetting things or losing your mind. You may be giving your opinion in a harsh manner. This dream could also indicate a play on the words, 'peace of mind'.
Mannequin
To dream of a mannequin implies that you are being too passive about some issue in your life. It is a symbol of your personality or some characteristic. Pay attention to what the mannequin is wearing to search for meaning. Perhaps you are avoiding something that you need to say or do.
Hairspray
Applying hairspray in a dream suggests a fixed attitude may be required in a social situation. Strong resolve is sometimes necessary in order to get the most out of a situation. Hairspray in a dream indicates that you may need to stand your ground and remind yourself that you have the right to your personal opinion.
Manta Ray
In a dream, the manta ray symbolizes a deep connection to the subconscious. The manta ray lives near the bottom of the ocean, hiding itself in the sand. If a manta ray reveals itself to you in a dream, you are being exposed to a hidden secret within your mind. The manta ray is graceful and effortlessly glides through your subconscious. The manta ray makes an excellent guide to knowing yourself better.
Man Of War
To dream of a man of war implies that you will be separating yourself from your close peers.
To see a man of war sailing upon rough seas indicates that outside influences will cause you discomfort and hardship.