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adj.
done or made using whatever is available; "crossed the river on improvised bridges"; "the survivors used jury-rigged fishing gear"; "the rock served as a makeshift hammer"
adj.
so remarkably different or sudden as to cause momentary shock or alarm; "Sydney's startling new Opera House"; "startling news"; "startling earthquake shocks"
adj.
not by design or artifice; unforced and impromptu; "an air of unstudied spontaneous utterance is apt to be painstakingly achieved"; "simple unstudied charm"