1. United States astronomer who discovered the planet Pluto (1906-1997)
   - Clyde Tombaugh, Clyde William Tombaugh

Type of: astronomer, stargazer, uranologist

• undogmatic
• undogmatical
• undoing
• undomestic
• undomesticated
• undone
• undoubted
• undoubtedly
• undrained
• undramatic
• undramatically
• undrape
• undraped
• undrawn
• undreamed
• undreamed of
• undreamt
• undreamt of
• undress
• undressed
• undried
• undrinkable
• Undset
• undue
• undulant