Some more tricky words

Ensure: to make certain something will happen

Insure: to provide compensation if a person dies or property is damaged

Envelop: to cover or surround

Envelope: a paper container for a letter

Flaunt: to display ostentatiously

Flout: to disregard a rule

Foreword: an introduction to a book
Forward: onwards, ahead

Imply: to suggest indirectly
Infer: to draw a conclusion

Loose: to unfasten; to set free
Lose: to be deprived of, to be unable to find

Meter: a measuring device
Metre: a metric unit; rhythm in verse

Principal: most important; the head of a school
Principle: a fundamental rule or belief

Realise: is the preferred spelling outside North America
Realize: is the preferred spelling in American and Canadian English

Sceptic: a person inclined to doubt
Septic: infected with bacteria

Stationary: not moving
Stationery: writing materials

Tortuous: full of twists; complex
Torturous: full of pain or suffering

Upgrade:   to improve the quality or usefulness of something, sucha as a machine or computer programme or give a person a more important job than before
Update: to make something more modern or suitable for use now by adding new information or changing its design

Wreath: a ring-shaped arrangement of flowers, etc
Wreathe: the yellow centre of an egg

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