adverb
1
BAD : Ordering a meal can be very difficult, specially when there is no menu.
GOOD : Ordering a meal can be very difficult, especially when there is no menu.
BAD : They should not drop bombs on innocent people, specially children.
GOOD : They should not drop bombs on innocent people, especially children.
BAD : I also enjoy water sports and I am specially interested in sailing.
GOOD : I also enjoy water sports and I am especially interested in sailing.
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Use specially when you mean that something is done or made for a particular purpose: 'We've come all the way from Frankfurt specially to see you.' 'The stamps were specially designed to commemorate the fiftieth anniversary of the United Nations.'
For all other meanings, use especially : 'Paris is always full of tourists, especially during the summer months.' 'Middle-aged men, especially those who are overweight, are susceptible to heart-attacks.'
2
BAD : To live in Britain you need a lot of money. Specially London is very expensive.
GOOD : To live in Britain you need a lot of money. London especially is very expensive.
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See note at ESPECIALLY 2 (↑ especially )