Relations between the two countries had been deteriorating for some time.

Relations have not been right since, and are deteriorating by the day.

But by the 18908, relations with the British had deteriorated.

If anything, relations between the two sides have deteriorated since then.

Relations between the two countries have deteriorated somewhat in the past year.

However, relations between the two groups deteriorated after three years, resulting in a war.

The relations between the president and the parliament had been deteriorating for some time.

Relations deteriorated and led to a war over Venice in 806-810.

Not to do this may cause relations, especially romantic ones, to deteriorate.

Relations between schools and the Authority deteriorated seriously as a result.