Russian-English translations for неусто́йчивый

• unsteady
  A slightly unsteady item of furniture
• inconsistent
  His account of the evening was inconsistent with the security-camera footage.
  He gave an inconsistent account of the evening, saying he called her before eight, but later that he had not talked to her until after nine.
• infirm
  He was infirm of body but still keen of mind, and though it looked like he couldnt walk across the room, he crushed me in debate.
  The thought is that you see an episode of observation, experiment, or reasoning as confirming or infirming a hypothesis depending on whether your probability for it increases or decreases during the episode.
• uncertain
  Tomorrows weather is uncertain
• unstable