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periodic law

noun

• Mendeleev's law
• law
• law of nature

sounds kind of like

• paradisaical
• paradisal
• paradisiacal
• paradoxical
• particle
• periodical
• periodically
• piratical
• portugal
• pretzel
• prodigal
• prodigally
• protocol
• protozoal
• prudishly
• pyridoxal