being the only one; only

the sole living relative.

being the only one of the kind; unique; unsurpassed; matchless

the sole brilliance of the gem.

belonging or pertaining to one individual or group to the exclusion of all others; exclusive

the sole right to the estate.

functioning automatically or with independent power

the sole authority.

Chiefly Law . unmarried.

without company or companions; lonely

the sole splendor of her life.

Archaic . alone.

adjective

shared , together

adjective

ace , exclusive , individual , lone , one , one and only , onliest , only , only one , particular , remaining , separate , single , solitary , solo , unique , unshared , singular , fancy-free , footloose , spouseless , unattached , unmarried , unwed , alone , desolate , isolated , lonely , unmatched