umbra-, umbro-, umbr-, umbel-

Relating to the top surface of a jellyfish; exumbrellar: Mary learned that a large siphonophore, for example a man-of-war, had an abumbral outer covering that looked like an umbrella.

Descriptive of a shadowy or shady condition.

A reference to giving a faint shadow or a slight resemblance to something that might happen.

1. To give an incomplete or faint outline or indication of something.
2. To give a vague indication or warning of something to come.
3. To overshadow and obscure something.
4. To give a faint shadow, or slight likeness; to exhibit a faint resemblance, like a shadow.

1. The act of making a shadow or faint resemblance.
2. The shadowing or partial concealment of an area.
3. A faint sketch; an imperfect representation of a thing.
4. In heraldry, the shadow only of a figure, outlined, and painted of a color darker than the field.

Faintly indicating something.

Conveying a suggestion, a declaration, a partial outline of, or the foreshadowing of something.

1. With some structure overhanging the parts so as partially to conceal them.
2. To shade; to darken; to cloud.

1. In astronomy, a partial outer shadow that is lighter than the darker inner shadow ("umbra"): Penumbra is the area between complete darkness and the complete light in an eclipse.
2. An indistinct area; especially, a situation in which something is unclear or uncertain: In astronomy, a penumbra is a grayish area surrounding the dark center of a sunspot.
3. The outer region or periphery of something: A penumbra area is covered by shadiness, so it is not completely dark.
4. Etymology: from Modern Latin penumbra. "partial shadow outside the complete shadow of an eclipse"; coined in 1604 by Kepler from Latin pæne, "almost" + umbra, "shadow".

We are but dust and shadow.

1. Lacking light or brightness and producing a dull, dark, or melancholy atmosphere.
2. Having a color or tone that is dark, dull, or suitable for a serious mood or occasion.
3. Marked by or conveying strict seriousness combined with sadness or a troubled state of mind.

Via French, "gloomy", ultimately from late Latin subumbrare, “to shadow" from sub, "under" plus umbra, "shade"; the source of English umbrage.

In a somber manner: that is, with a gloomy, depressing, or dismal attitude.

A straw or felt hat with a very wide upturned brim, originally worn by men in Mexico and some other Spanish-speaking countries.

Via Spanish, "hat", from sombra "shade"; previously from Vulgar Latin sumombrare.

The concave oral surface of the umbrella of a medusa (jelly fish); the concave inner surface of the medusoid bell.

1. In botany [diminutive of umbra, shadow], a flat-topped or rounded flower cluster (umbrella-shaped flower head) in which the individual flower stalks spring from about the same point in an axis, as in the carrot, parsley, dill, fennel, and related plants.
2. A typically umbrella-shaped inflorescence in which all pedicels arise at the apex of an axis; commonly compound.