Preferring to be alone
solitary adjective
tending to spend a lot of time alone
retiring adjective
someone who is retiring tends to avoid social activities because they are shy
withdrawn adjective
very quiet and preferring not to talk to other people
antisocial adjective
not interested in meeting other people, or not enjoying friendly relationships with them
self-contained adjective
not needing the help or friendship of other people
keep yourself to yourself phrase
to stay alone or with your family rather than spending time with other people
insular adjective
not interested in meeting anyone outside your own group or country, or not interested in learning new ideas or ways of doing things
reclusive adjective
living alone and avoiding other people
stay-at-home adjective
choosing to stay at home instead of going to places to meet friends or do interesting things
two's company, three's a crowd phrase
used for saying that two people, especially people having a romantic relationship, would prefer to be alone rather than with other people