Clue: Transitory; unstable

Answer: FLYBYNIGHT

Length: 10

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Similar Clues:

• Unstable particles with great mass (HYPERONS with 8 letters)
• Be unstable (e.g. TEETER with 6 letters)
• Not transitory (ETERNAL with 7 letters)
• Unstable particles (e.g. MUONS with 5 letters)
• Unstable subatomic particle (e.g. KAON with 4 letters)
• Transitory or terrestrial (TEMPORAL with 8 letters)
• Far from transitory (ETERNAL with 7 letters)
• Unstable leptons (e.g. MUONS with 5 letters)
• Unstable meson (KAON with 4 letters)
• Transitory (e.g. FLYBYNIGHT with 10 letters)