unseen - Wordage.info - Free Thesaurus Tool for Word Discovery - Expanded Thesaurus, Reverse Dictionary Lookup

unobserved collapse: not observed; "managed to slip away unobserved"; not observed

unexplained collapse: having the reason or cause not made clear; "an unexplained error"; not explained; "accomplished by some unexplained process"

undiscovered collapse: not yet discovered; "undiscovered islands"; not discovered; "with earth-based telescopes many stars remain undiscovered"

disappear collapse: get lost, as without warning or explanation; "He disappeared without a trace"

unmarked collapse: not having an identifying mark; "unmarked cards"; "an unmarked police car"

indiscernible collapse: difficult or impossible to perceive or discern; "an indiscernible increase in temperature"; barely able to be perceived; "the transition was almost indiscernible"; "an almost insensible change"

invisible collapse: impossible or nearly impossible to see; imperceptible by the eye; "the invisible man"; "invisible rays"; "an invisible hinge"; "invisible mending"

disappearance collapse: the act of leaving secretly or without explanation; the event of passing out of sight; ceasing to exist; "he regretted the disappearance of Greek from school curricula"; "what was responsible for the disappearance of the rainforest?"; "the disappearance of resistance at very low temperatures"

imperceptible collapse: impossible or difficult to perceive by the mind or senses; "an imperceptible drop in temperature"; "an imperceptible nod"; "color is unperceivable to the touch"

concealed collapse: hidden on any grounds for any motive; "a concealed weapon"; "a concealed compartment in his briefcase"; not accessible to view; "concealed (or hidden) damage"; "in stormy weather the stars are out of sight"

hidden collapse: difficult to find; "hidden valleys"; "a hidden cave"; "an obscure retreat"; designed to elude detection; "a hidden room or place of concealment such as a priest hole"; "a secret passage"; "the secret compartment in the desk"

traffic collapse: buying and selling; especially illicit trade; the amount of activity over a communication system during a given period of time; "heavy traffic overloaded the trunk lines"; "traffic on the internet is lightest during the night"; the aggregation of things (pedestrians or vehicles) coming and going in a particular locality during a specified period of time; trade or deal a commodity; "They trafficked with us for gold"; deal illegally; "traffic drugs"

barter collapse: an equal exchange; "we had no money so we had to live by barter"; exchange goods without involving money

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