soli-, sol- +

1. Done without the company of other people.
2. Preferring to be or live alone.
3. Existing as the only one of its kind.
4. In zoology, used to describe animals that live alone or in pairs rather than in colonies or social groups.
5. In botany, a reference to flowers that grow singly rather than as a cluster.

A solitary wave; a quantum or quasiparticle propagated in the manner of a solitary wave.

1. The state of being alone, separated from other people, whether considered as a welcome freedom from disturbance or as an unhappy loneliness.
2. A quality of quiet remoteness or seclusion in places from which human activity is generally absent.
3. A remote or uninhabited place.

Someone who likes to be alone; a recluse.

Characterized by living alone or by solitude.

To render solitary.

1. Wandering about alone.
2. Characterized by going alone.

Wandering alone; solitary.

1. A performance by a single artist such as a musician, singer, or dancer with or without accompaniment.
2. An action or feat carried out by one person alone, e.g., a flight in an aircraft or a climb up a mountain.

Anyone who performs a solo.

1. Showing a bad temper or hostility by a refusal to talk, behave sociably, or cooperate cheerfully.
2. Dull and gray because of clouds, fog, or haze; such as, sullen ocean skies.
3. Moving slowly: "We saw a sullen stream while hiking in the country side."
4. Etymology: an alteration of Middle English soleyn, "unique, singular"; from Anglo-French solein, "alone", it was formed on the pattern of Old French soltain, from Old French soul, "single". The sense shift in Middle English from "solitary" to "morose" occurred between about 1380 and 1400; which in turn came from Latin solus, sol-, "sole, single"; which was the original English sense;.

1. With a gloomy or a morose ill-humor.
2. With a somber or a gloomy aspect.
3. With a dull or dismal sound.

1. The condition, instance, or quality of being sullen in behavior, aspect, or temper.
2. Dismalness, gloom.