Possible Clues:

• Of the study of insects
• Not taking due care
• Thoughtless Gazza initially left one German with space in goal
• Careless Nigel upset chap behind
• Failing to take due care
• Without ceremony, nightdress is trimmed by South Bank playhouse
• Nightdress shortened, not wanting zip that's slack
• Careless line failing to impress good man
• Careless, offhand
• Not working properly