shadowing

CIDE DICTIONARY

shadowing, n. 

•  Shade, or gradation of light and color; shading.  Feltham.  [1913 Webster]
•  A faint representation; an adumbration.  [1913 Webster]

  "There are . . . in savage theology shadowings, quaint or majestic, of the conception of a Supreme Deity."  [1913 Webster]

THESAURUS

shadowing

ambuscade, ambush, ambushment, blackening, blind, blocking the light, booby trap, bugging, chase, chasing, cloak-and-dagger work, clouding, counterespionage, counterintelligence, darkening, dimming, dogging, eclipsing, electronic surveillance, espial, espionage, extinguishment, follow, follow-up, following, heeling, hounding, hue and cry, hunting, intelligence, intelligence work, lurking hole, military intelligence, obfuscation, obnubilation, obscuration, obscurement, observation, obumbration, occulting, overcast, overclouding, overshading, overshadowing, overshadowment, prosecution, pursual, pursuance, pursuing, pursuit, quest, searching, secret police, secret service, seeking, sequel, sequence, series, shading, spying, stakeout, stalking, stalking-horse, surveillance, tailing, tracking, tracking down, trailing, trap, wiretap, wiretapping