The Friday Brain-teaser from Xrefer - this week: Spelling. Answers here

Spelling contests are in the news at the moment, with spelling bees in the USA and a spelling competition on British television. Test your spelling ability with this brainteaser. In each question, pick out the correct spelling; each set starts with a definition of the word

1. Hopeful: optimistic, optermistic, optimistick
2. Microscopic animals and plants in the sea: planktun, planckton, plankton
3. Refined or cultured: sofisticated, sophisticated, sofistercated
4. Murder: asassination, assassination, assasination
5. Australian bird: kookerburrer, kookaburra, koockabura
6. A hired soldier: mercenary, mercenery, mercinary
7. An optical toy: kaleidoscope, caleidoscope, keleidascope
8. Without delay: imediately, immediately, immediatly
9. Momentous or overwhelming: apokaliptic, apocaliptick, apocalyptic
10. Ringing of bells: tintinabulation, tintinabullation, tintinnabulation

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