(idiomatic) Egotistical, believing oneself to be superior to others; preoccupied with one's own work, interests, point of view, etc.

Alone; without assistance or help from others. / Alone, without another's immediate company / (rare) Used other than figuratively or idiomatically: see by, oneself.

plural of oneirocritic

The art of interpreting dreams; oneirocriticism.

(idiomatic) To create a predicament or problem for oneself; to do something that leaves one with no good alternatives or solutions.

To organize or solve one's personal problems. / To calm down emotionally.

To take care of oneself without help.

(idiomatic) To explain one's ideas and opinions clearly so that another person can understand them and get a picture of your personality.

Feeling self-satisfied.

(reflexive) To serve oneself, especially to take food or other supplies, rather than wait to be served by another; used to indicate friendly permission or invitation.