1) An incautious word, I felt, could spark off resentment.

2) Their keen intellects and powerful personalities could spark off more than just brilliant ideas at times.

3) This, and other attention-getting highlights, was to spark off widespread interest.

4) Some drugs spark off this emergency response and help their targets to defend themselves.

5) Local fighting might spark off a major war.

6) That incident spark off a whole series of events.

7) A film you've watched can spark off a new idea.

8) Such a refusal would spark off a major constitutional crisis.

9) Most new users remark on this-and the fact that email often seems to spark off a surprising intimacy.

10) I don't want to talk to her because it will only spark off a row.