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1【get worse】2【become stronger】3【expression on somebody's face】4【water】5【colour】6【sound】7【breath】
【GET WORSE】 [I] if a serious situation deepens, it gets worse - used especially in news reports
The recession continues to deepen. a deepening international crisis【BECOME STRONGER】 [I and T] to become stronger or greater, or to make something stronger or greater
Jeanne liked Simon as a friend but she did not want the relationship to deepen. The idea only deepened his gloom. The mystery deepened (=became even more mysterious) . Students explore new ideas as they deepen their understanding (=understand more) of the subject.【EXPRESSION ON SOMEBODY'S FACE】 [I]literary if someone's smile or
frown deepens, they smile even more or frown even more
Her worried frown deepened.【WATER】 [I and T] if water deepens, or if someone deepens it, it becomes deeper
The river deepens beyond the town. The harbour has been deepened to take bigger boats.【COLOUR】 [I]literary if light or a colour deepens, it becomes darker
The twilight deepened.【SOUND】 [I] if a sound deepens, it becomes lower
His voice deepened as he relaxed.【BREATH】 [I] if your breathing deepens, you take more air into your lungs