If a word ending in -fer is stressed, e.g. deFER, transFER etc. then when adding a suffix that starts with a vowel (i.e. -ing, -ed, -al) you must double the final 'r'. If the 'fer' sound is unstressed e.g. in offer or preference, then you do NOT double the final 'r'.
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defer |
They are going to defer the match until the rainstorm has stopped.
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deferred |
He deferred his place at university for a year.
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deferring |
The exam board were deferring the exams until later in the year.
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transfer |
Liquids and gases transfer heat by convection.
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transferred |
The footballer was transferred to another team.
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transferring |
They banker spent his day sorting and transferring money.
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refer |
Please refer back to the preceding page.
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referred |
The Headmistress referred to the children's excellent behaviour when talking about the school.
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reference |
If you are stuck, use the instruction book for reference.
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referring |
I was referring to the text in my answer.
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prefer |
Our dad prefers plain food to spicy.
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preferred |
Charlotte preferred candy floss to chocolate.
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preference |
He has a preference for classical music.
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preferring |
Preferring to eat earlier rather than later, I booked a table for 5.30pm.
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infer |
To infer means to reach (a conclusion) based on known facts.
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inferring |
As you may be inferring from my accent, I originally come from Australia.
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inferred |
If something is inferred, it means it is deduced or reasoned using logic.
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inference |
The pupils were asked to use inference as they read the text.
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offer |
Tom was selfish not to offer me a lift.
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offering |
The shop was offering a deal.
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* This sentence was added by a Spellzone user.
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