nubi-, nub- +

(Latin: cloud, fog; shade; obscure)

Caput inter nubila condit.
She hides her head among the clouds.

Who is she that hides her head in the clouds? The line is from Virgil, who had the personified Fame in mind as the subject of the verb condit. For most people, fame never emerges from behind the clouds; instead, most people labor in obscurity, waiting for their few minutes of fame that never comes.

nuance
1. A very slight difference in meaning, feeling, tone, or color.
2. The use or awareness of subtle shades of meaning or feeling; especially, with references to artistic expressions or performances.
3. A subtle difference in meaning, opinion, or attitude; hence a slight degree of difference in anything perceptible to the mind.
4. Etymology: from French nuance, "slight difference, shade of color" (so called with reference to the different colors of the clouds); from nuer, "to shade"; from nue, "cloud", from Gallo-Romance nuba, from Latin nubes, "cloud"; related to obnubere, "to veil".
nubecula
1. A faint cloud or cloudiness.
2. Cloudiness, as of the cornea or the urine.
nubia
1. A woman's light scarf worn over the head and neck.
2. A light, knitted fabric of wool, worn on the head by women.
3. A cloud. 4. When capitalized, Nubia refers to a desert region and ancient kingdom in the Nile River valley of southern Egypt and northern Sudan.

After the 20th century B.C., it was controlled by the rulers of Egypt, although in the 8th and 7th centuries an independent kingdom arose that conquered Egypt and ruled as the XXV Dynasty (712-663).

Converted to Christianity in the 6th century A.D., Nubia united with Ethiopia but fell to the Muslims in the 14th century. Much of the region was flooded by the completion of the Aswan High Dam in the 1960s.

nubiferous
Cloud-bringing.
nubiform
Resembling a cloud; cloud like.
nubigenous
1. Cloud-born.
2. Born of, or produced from, clouds.
nubilate
To obscure or to make cloudy.
nubilous
1. Cloudy or foggy.
2. Obscure or vague; indefinite.
obnubilate
1. Make less visible or unclear.
2. To make unclear, indistinct, or blurred.
3. To cloud over; to becloud; to obscure.
obnubilation
1. A clouded mental state or condition.
2. A lowered level of consciousness; for example, with a loss of the ability to respond properly to external stimuli.