Most hermetical means closed off, secretive or insular. The antonyms for this word would be open, communicative and expansive. An open individual is transparent, honest, and easy to approach. Such a person is available for communication, discussion, and sharing of ideas. Communicative individuals are responsive and receptive to conversations and can effectively express their thoughts and emotions. An expansive person is broad-minded, lenient and tolerant of others, and receptive to new experiences. They can be outgoing, sociable and open to a variety of interests. Opposite of a most hermetical person, someone who is open, communicative and expansive have the ability to connect and build meaningful relationships with others, creating a positive and supportive environment.