obscur- +
(Latin: dark, dusky; indistinct, uncertain, unintelligible)
Brevis esse laboro, obscurus fio; sectantem levia. Nervi deficiunt animique.
When I try to be brief, I become obscure. Aiming at smoothness, I fail in force and fire.
From Ars Poetica, by Quintus Horatius Flaccus (Horace) who was instructing writers that it may be difficult to achieve brevity without sacrificing clarity.
Not that the story need be long, but it will take a long while to make it short."
—Henry David Thoreau (1817-1862) U.S. naturalist and author
obscurant
1. Someone who opposes intellectual advancement and political reform.
2. Characterized by opposition to intellectual advancement and political reform.
3. Tending to make obscure: "We saw an obscurant bank of clouds in the sky."
obscurantism
1. A policy of opposition to the increase, enlightenment, or the spread of knowledge.
2. A policy of withholding information from the public.
3. A style in art and literature characterized by deliberate vagueness or obliqueness.
obscurantist
1. Someone who is deliberately vague or unclear.
2. Opposing or hindering the spread of new ideas and new social or political developments.
obscuration
1. The act of obscuring.
2. The state of being obscured.
3. The state of being darkened or obscured; such as, the obscuration of the moon in an eclipse.
obscure
1. To conceal or to conceal by confusing (the meaning of a statement, poem, etc.).
2. To make dark, dim, indistinct, etc.
3. To reduce or to neutralize (a vowel) to the sound usually represented by a schwa (ə).
4. A reference to a meaning which is not clear or plain; ambiguous, vague, or uncertain: "There was an obscure sentence in the contract."
5. Not clear to the understanding; hard to perceive: "She had obscure motivations."
6. With reference to language, style, a speaker, etc.; not expressing the meaning clearly or plainly.
7. To make less visible or to make unclear.
8. Not readily noticed or seen; inconspicuous: "There was an obscure flaw in his reasoning."
obscured
1. That which was unclear and difficult to understand or see: "Official policy has changed, for reasons that remain obscured."
2. Prevented from being seen or heard: "Since those two new skyscrapers were built, they have obscured the view from our window.
3. Something which has been made difficult to see, to discover, or to comprehend: "The sun was obscured by the storm clouds."
obscurely
1. In a way that is not clear, definite, or easy to understand.
2. Dimly or indistinctly seen or understood.
3. Away from people's attention; in a place or position that is remote, secluded, or not prominent or well-known.
obscureness
1. A condition in which something is indistinct or indefinite for lack of adequate illumination; obscurity.
2. The quality of being unclear or abstruse and hard to understand.
obscurer
Someone who makes something difficult to find and to understand:"The managerss deliberately obscured the real situation from the employees of the company."
obscuring
1. A reference to language, style, a speaker, etc. which are not expressing the meanings clearly or plainly.
2. Lacking in light or illumination; dark; dim; murky: "They entered the house in the obscuring darkness which was surrounding them."
3. Enveloping in, concealing by, or frequenting darkness.
4. Making undecipherable or imperceptible by obscuring or concealing.
obscurity
1. A state of being unknown or inconspicuous: "She was plucked from obscurity to star in a Hollywood musical.
2. Lacking clarity or having difficulty in being understood.
3. An obscure, unknown, unimportant person or thing.
4. Being in a state of darkness, dimness, and indistinctness.
subobscurely
1. Somewhat obscurely or darkly.
2. Partially or slightly lacking in understanding.