fog(v = verb.perception) becloud, befog, cloud, haze over, mist, obnubilate, obscure - make less visible or unclear; "The stars are obscured by the clouds"; "the big elm tree obscures our view of the valley"

is one way to conceal, hide

Derived forms noun fog₃, noun fog₂

Sample sentence:
Something ----s something

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CIDE DICTIONARY

fog, n. [Cf. Scot. fog, fouge, moss, foggage rank grass, LL. fogagium, W. ffwg dry grass.].

A second growth of grass; aftergrass.

"Sometimes called, in New England, old tore. In Scotland, fog is a general name for moss." [1913 Webster]

fog, v. t.

To pasture cattle on the fog, or aftergrass, of; to eat off the fog from. [1913 Webster]

fog, v. i. [Etymol. uncertain.].

To practice in a small or mean way; to pettifog. [1913 Webster]

"Where wouldst thou fog to get a fee?" [1913 Webster]

fog, n. [Dan. sneefog snow falling thick, drift of snow, driving snow, cf. Icel. fok spray, snowdrift, fj snowstorm, fj to drift.].

Watery vapor condensed in the lower part of the atmosphere and disturbing its transparency. It differs from cloud only in being near the ground, and from mist in not approaching so nearly to fine rain. See Cloud. [1913 Webster]

A state of mental confusion. [1913 Webster]

Cloudiness or partial opacity of those parts of a developed film or a photograph which should be clear. [Webster 1913 Suppl.]

Fog alarm, Fog bell, Fog horn, etc., a bell, horn, whistle or other contrivance that sounds an alarm, often automatically, near places of danger where visible signals would be hidden in thick weather. -- Fog bank, a mass of fog resting upon the sea, and resembling distant land. -- Fog ring, a bank of fog arranged in a circular form, -- often seen on the coast of Newfoundland.

fog, v. t.

To envelop, as with fog; to befog; to overcast; to darken; to obscure. [1913 Webster]

To render semiopaque or cloudy, as a negative film, by exposure to stray light, too long an exposure to the developer, etc. [Webster 1913 Suppl.]

fog, v. i.

To show indistinctly or become indistinct, as the picture on a negative sometimes does in the process of development. [1913 Webster]

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OXFORD DICTIONARY

fog, n. & v.
--n.
1 a a thick cloud of water droplets or smoke suspended in the atmosphere at or near the earth's surface restricting or obscuring visibility. b obscurity in the atmosphere caused by this.
2 Photog. cloudiness on a developed negative etc. obscuring the image.
3 an uncertain or confused position or state.
--v. (fogged, fogging)
1 tr. a envelop or cover with fog or condensed vapour. b bewilder or confuse as if with a fog.
2 intr. become covered with fog or condensed vapour.
3 tr. Photog. make (a negative etc.) obscure or cloudy.

Idiom

fog-bank a mass of fog at sea. fog-bound unable to proceed because of fog. fog-bow a manifestation like a rainbow, produced by light on fog. fog-lamp a lamp used to improve visibility in fog. fog-signal a detonator placed on a railway line in fog to warn train drivers. in a fog puzzled; at a loss.

fog, n. & v. esp. Brit.
--n.
1 a second growth of grass after cutting; aftermath.
2 long grass left standing in winter.
--v.tr. (fogged, fogging)
1 leave (land) under fog.
2 feed (cattle) on fog.

Etymology

ME: orig. unkn.

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THESAURUS

fog
CAT, London fog, London special, addle, addle the wits, aerospace, aerosphere, aftergrass, air hole, air pocket, airspace, amorphousness, ball up, bamboo, becloud, bedazzle, bedim, befog, befuddle, befuddlement, bemist, bewilder, bewilderment, blur, bother, botheration, bug, bump, cane, ceiling, cereal, cereal plant, chaos, clabber up, cloud, cloud over, cloud up, confuse, confusion, corn, crosswind, dark, darken, darken over, darkness, daze, dazzle, defocus, deform, dim, discombobulate, discombobulation, discomfit, discomfiture, discompose, discomposure, disconcert, disconcertion, disorder, disorganization, disorganize, disorient, disorientation, distort, distract, disturb, disturbance, drisk, drizzling mist, eclipse, embarrass, embarrassment, empty space, encloud, enmist, entangle, farinaceous plant, favorable wind, film, flummox, flurry, fluster, flutter, fog up, fogginess, forage grass, frenzy, front, frost smoke, fuddle, fuddlement, fuss, fuzz, fuzziness, gauze, grain, graminaceous plant, grass, haze, head wind, high-pressure area, hole, indeterminateness, indistinctness, ionosphere, jetstream, jumble, lawn grass, lose resolution, low-pressure area, make uncertain, maze, mess, mess up, mist, mistiness, mix up, moider, muddle, muddlement, muddy, mumbo jumbo, murk, murkiness, mystification, mystify, nubilate, obfuscate, obfuscation, obnubilate, obscurantism, obscuration, obscure, obscurity, opacity, ornamental grass, overcast, overcloud, overshadow, oversmoke, pale, pea soup, pea-soup fog, peasouper, perplex, perplexity, perturb, perturbation, pocket, pother, pucker, put out, puzzle, raise hell, rattle, reed, roughness, ruffle, shade, shadow, shapelessness, shuffle, smog, smoke, soften, soup, space, stew, stratosphere, substratosphere, sweat, swivet, tail wind, throw into confusion, tizzy, tropopause, troposphere, trough, turbulence, unclarity, unclearness, unform, unplainness, unsettle, unsettlement, unshape, upset, vagueness, vapor, visibility, visibility zero

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ROGET THESAURUS

fog

Bubble
N bubble; cloud, bubble, foam, froth, head, spume, lather, suds, spray, surf, yeast, barm, spindrift, cloud, vapor, fog, mist, haze, steam, geyser, scud, messenger, rack, nimbus, cumulus, woolpack, cirrus, stratus, cirrostratus, cumulostratus, cirrocumulus, mackerel sky, mare's tale, dirty sky, curl cloud, frost smoke, thunderhead, nephelognosy, nephograph, nephology, effervescence, fermentation, bubbling, nebula, cloudliness, nebulosity, bubbling, frothy, nappy, effervescent, sparkling, mousseux, frothy, up, cloudy, thunderheaded, vaporous, nebulous, overcast, the lowring element scowls o'er the darkened lands.

Turbidity
N turbidity, cloudiness, fog, haze, muddiness, haziness, obscurity, nephelometer, turbid, thick, muddy, obfuscated, fuliginous, hazy, misty, foggy, vaporous, nubiferous, cloudy (cloud), smoky, fumid, murky, dirty.

Uncertainty
N uncertainty, incertitude, doubt, doubtfulness, dubiety, dubitation, dubitancy, dubitousness, hesitation, suspense, perplexity, embarrassment, dilemma, bewilderment, timidity, vacillation, diaporesis, indetermination, vagueness, haze, fog, obscurity, ambiguity, contingency, dependence, dependency, double contingency, possibility upon a possibility, open question, onus probandi, blind bargain, pig in a poke, leap in the dark, something or other, needle in a haystack, needle in a bottle of hay, roving commission, precariousness, fallibility, uncertain, casual, random, changeable, doubtful, dubious, indecisive, unsettled, undecided, undetermined, in suspense, open to discussion, controvertible, in question, vague, indeterminate, indefinite, ambiguous, equivocal, undefined, undefinable, confused, mystic, oracular, dazed, perplexing, enigmatic, paradoxical, apocryphal, problematical, hypothetical, experimental, unpredictable, unforeseeable (unknowable), fallible, questionable, precarious, slippery, ticklish, debatable, disputable, unreliable, untrustworthy, contingent, contingent on, dependent on, subject to, dependent on circumstances, occasional, provisional, unauthentic, unauthenticated, unauthoritative, unascertained, unconfirmed, undemonstrated, untold, uncounted, in a state of uncertainty, in a cloud, in a maze, bushed, off the track, ignorant, afraid to say, out of one's reckoning, astray, adrift, at sea, at fault, at a loss, at one's wit's end, at a nonplus, puzzled, lost, abroad, d_esorient_e, distracted, distraught, pendente lite, sub spe rati, Heaven knows, who can tell? who shall decide when doctors disagr.

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