penumbrape‧num‧bra /pəˈnʌmbrə/ noun [countable] 
Word Origin
Word OriginWORD ORIGINpenumbra
ExamplesOrigin:
1600-1700 Modern Latin, Latin paene ‘almost’ + umbra ‘shadow’EXAMPLES FROM THE CORPUS
word sets- In other words, the First Amendment has a penumbra where privacy is protected from governmental intrusion.
- She kept hitting my forehead, and penumbra replaced myopia, and my arms fell away, no longer offering interference.
- The area round it was hidden in the penumbra.
- The right of association contained in the penumbra of the First Amendment is one, as we have seen.
- Thus, beyond the specifically theological reasons for unionism, there is a broader penumbra of social concerns.
WORD SETS► Nature
technical an area of slight darknessbackwater, nounbank, nounbank, verbbare, adjectivebarrier reef, nounbay, nounbayou, nounbeach, nounbeck, nounbelt, nounbillow, nounbiting, adjectivebitter, adjectiveblack ice, nounblast, nounblazing, adjectivebleach, verbblizzard, nounblow, verbblowy, adjectivebluff, nounbluster, verbblustery, adjectivebog, nounboiling, adjectiveboulder, nounbracing, adjectivebreaker, nounbreeze, nounbreezy, adjectivebrook, nounbrush, nounbrushwood, nounburn, nounbutte, nouncanyon, nouncascade, nouncataract, nouncave, nouncavern, nounchange, verbchasm, nounchoppy, adjectiveclap, nounclear, verbclement, adjectivecliff, nouncloud, nouncloudburst, nouncloudy, adjectivecoast, nouncoastal, adjectivecoastline, nouncone, nouncopse, nouncountry, nouncranny, nouncrater, nouncreation, nouncreep, verbcrisp, adjectivecrosswind, nouncumulus, nouncyclone, noundale, noundell, noundense, adjectivedew, noundewdrop, noundewfall, noundewy, adjectivedisgorge, verbdog days, noundownpour, noundownriver, adverbdownstream, adverbdownwind, adverbdrift, verbdrift, noundriftwood, noundrizzle, noundrop, verbdrop, noundrought, noundry, adjectivedry land, noundull, adjectivedune, nounduster, noundust storm, nouneast, adjectiveeddy, nounelectrical storm, nounequable, adjectiveeye, nounface, nounfail, verbfair, adjectivefall, nounfell, nounfen, nounfield, nounfierce, adjectivefiord, nounfirth, nounfjord, nounflood, verbflood, nounflood tide, nounflotsam, nounflow, nounflow, verbflower, nounflurry, nounfog, nounfogbound, adjectivefoggy, adjectivefoothill, nounfoothold, nounford, nounforeshore, nounforest, nounfoul, adjectivefreak, adjectivefreeze, nounfresh, adjectivefreshen, verbfreshwater, adjectivefrost, nounfury, noungale, noungale force, adjectivegap, noungentle, adjectivegeyser, nounglacial, adjectiveglen, noungnarled, adjectivegrassy, adjectivegreen, adjectivegreenery, nounground, nounground level, noungulley, noungully, noungust, noungust, verbgusty, adjectivehail, nounhailstone, nounhailstorm, nounhaze, nounheadwind, nounheath, nounheather, nounheat wave, nounhigh tide, nounhigh water, nounhill, nounhillock, nounhillside, nounhill station, nounhilly, adjectivehoarfrost, nounhot spring, nounhummock, nounhurricane, nounice, nouniceberg, nounice cap, nouninclement, adjectiveincline, nounIndian summer, nouninland, adjectiveinland, adverbinlet, nouninshore, adverbisland, nounisle, nounislet, nounjetsam, nounjungle, nounknoll, nounlake, nounlakeside, adjectiveledge, nounlightning, nounlip, nounloch, nounlough, nounlow tide, nounlow water, nounmarshland, nounmeadow, nounmere, nounmild, adjectivemillpond, nounmire, nounmist, nounmisty, adjectivemoan, verbmoan, nounmonsoon, nounmoonless, adjectivemoor, nounmoorland, nounMother Nature, nounmound, nounmountain, nounmountainous, adjectivemountainside, nounmountaintop, nounmouth, nounmudflat, nounmull, nounmurmur, verbmurmur, nounnarrows, nounnestle, verbnew moon, nounnook, nounnorth, adjectivenortheast, adjectivenortheaster, nounnortheasterly, adjectivenortherly, adjectivenorthwest, adjectivenorthwester, nounnorthwesterly, adjectivenotch, nounoasis, nounonshore, adjectiveooze, nounoutcrop, nounovercast, adjectiveozone, nounpack ice, nounpalisade, nounpanorama, nounparch, verbparched, adjectivepass, nounpatchy, adjectivepeak, nounpeal, nounpeasouper, nounpebble, nounpelt, verbpenumbra, nounperishing, adjectivepinewood, nounpinnacle, nounpitiless, adjectivepond, nounpour, verbprecipice, nounprospect, nounpuddle, nounquicksand, nounradiate, verbraging, adjectiverain, nounrainbow, nounrain drop, nounrainfall, nounrainstorm, nounrainwater, nounrainy, adjectiverange, nounrapids, nounrarefied, adjectiveravine, nounraw, adjectiverecede, verbreedy, adjectivereef, nounreservoir, nounridge, nounrift, nounrime, nounrise, verbrise, nounrock, nounrocky, adjectiveroll, verbrolling, adjectiverough, adjectiverural, adjectivescenery, nounscud, verbsea breeze, nounsea mist, nounset, verbshore, nounsky, nounslope, nounsludge, nounsnow, nounsnowbound, adjectivesnow-capped, adjectivesnowdrift, nounsnowfall, nounsnowflake, nounsnowstorm, nounsnowy, adjectivesouth, adjectivesoutheast, adjectivesoutheaster, nounsoutheasterly, adjectivesoutherly, adjectivesouthwest, adjectivesouthwesterly, adjectivespinney, nounspring, nounstream, nounsullen, adjectivesultry, adjectivesummer, nounsummit, nounsun, nounsundown, nounsun-drenched, adjectivesunrise, nounsunset, nounsunshine, nounswamp, nounsweep, verbswollen, adjectivetempestuous, adjectivethaw, verbthaw, nounthicket, nounthin, adjectivethunder, verbthunderbolt, nounthunderstorm, nounthundery, adjectivetide, nountreeless, adjectivetree-lined, adjectivetrough, nounturf, nountussock, nountwilight, nounvale, nounvalley, nounverdant, adjectivevisibility, nounvoid, nounwashout, nounwater, nounwatercourse, nounwaterfall, nounwaterside, nounwaterspout, nounwax, verbwest, adjectivewest, adverbwestbound, adjectivewesterly, adjectivewesternmost, adjectivewestward, adverbwet, adjectivewhirlpool, nounwhirlwind, nounwhite horses, nounwhitewater, nounwild, adjectivewill o' the wisp, nounwind, nounwindstorm, nounwindswept, adjectivewindy, adjectivewood, nounwooded, adjectivewoodland, nounwoodsy, adjectivewoody, adjectivezephyr, noun