0 past simple and past participle of worsen
His condition had worsened since his last visit 1 week earlier.
Factions within parties, alignments and realignments within parties, and self-serving coalitions further worsened matters.
When they do so, the causal chain leading to a group's being worsened is longer than the causal chain leading to another group's being benefited.
Interviews were carried out by independent assessors blind to treatment condition to determine whether these problems had improved or worsened after treatment.
The situation worsened in the 1980s when the attempted political openness along with electoral gains made the system more generous.
As was the case with poverty, income inequality has worsened since 1994.
Other things being equal, and in line with equation (11), this worsened inflationary pressures resulting from conflict over the distribution of income.
To the contrary, maladjustment not only persisted but, on average, worsened after grade retention.
