| genus Vireo | type genus of the Vireonidae |
| vireo | any of various small insectivorous American birds chiefly olive-grey in color |
red-eyed vireo
Vireo olivaceous | of northern North America having red irises and an olive-grey body with white underparts |
solitary vireo
Vireo solitarius | of eastern North America having a bluish-grey head and mostly green body |
blue-headed vireo
Vireo solitarius solitarius | common vireo of northeastern North America with bluish slaty-grey head |
soliton
soliton wave
solitary wave | (physics) a quantum of energy or quasiparticle that can be propagated as a traveling wave in nonlinear systems and is neither preceded nor followed by another such disturbance, does not obey the superposition principle and does not dissipate, soliton waves can travel long distances with little loss of energy or structure |
hermit
recluse
solitary
solitudinarian
troglodyte | one who lives in solitude |
| solitary pussytoes | a variety of pussytoes |
solitary confinement
solitary | confinement of a prisoner in isolation from other prisoners, he was held in solitary |
lonely
solitary
unfrequented | devoid of creatures, a lonely crossroads, a solitary retreat, a trail leading to an unfrequented lake |
lone(a)
lonesome(a)
only(a)
sole(a)
solitary(a) | being the only one, single and isolated from others, the lone doctor in the entire county, a lonesome pine, an only child, the sole heir, the sole example, a solitary instance of cowardice, a solitary speck in the sky |
lone(a)
lonely(a) solitary | characterized by or preferring solitude, a lone wolf, a lonely existence, a man of a solitary disposition, a solitary walk |
alone(p)
lone(a)
lonely(a)
solitary | lacking companions or companionship, he was alone when we met him, she is alone much of the time, the lone skier on the mountain, a lonely fisherman stood on a tuft of gravel, a lonely soul, a solitary traveler |
nongregarious
nonsocial
solitary | of plants and animals, not growing or living in groups or colonies, solitary bees |