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precarious (EN)
adjective

adjective “precarious”

base form precarious (more/most)
  1. (of a situation) uncertain, risky
    The hikers found themselves in a precarious position on the edge of the cliff.
  2. likely to fall
    The stack of books on the edge of the table is precarious and might topple over.
  3. (in dentistry) in the early stage of tooth decay
    The dentist warned that the precarious spots on my teeth could turn into cavities if not treated soon.