deep·en 
/ˈdi:pən/ verb
deep·ens; deep·ened; deep·en·ing /ˈdi:pən/ verb 1 : to become or to cause (something) to become deep or deeper [+ obj] ▪ They deepened the river so that larger boats could sail through. ▪ Age had deepened the lines in his face. [no obj] ▪ The water deepens toward the center of the river. 2 : to become or to cause (something, such as a feeling or emotion) to become stronger or more powerful [+ obj] ▪ The experience deepened [=strengthened] his love for acting. ▪ Her powerful words deepened our commitment to the cause. ▪ The vacation together deepened their relationship with each other. ▪ The mystery was deepened by her silence. [no obj] ▪ Their friendship deepened [=grew deeper] with time. 3 [+ obj] : to make (your knowledge, understanding, etc.) fuller or more complete
▪ This class will deepen your understanding of economics. ▪ Living in the country's capital had deepened her knowledge of politics. 4 : to become or to cause (something) to become worse or more severe [+ obj] ▪ The government's policies have deepened the country's economic recession. ▪ The situation is deepening the divisions between the two groups. [no obj] ▪ These divisions have deepened over the years. 5 : to become or to cause (something, such as a person's voice) to become lower in sound [no obj] ▪ His voice has deepened over the years. [+ obj] ▪ Time has deepened his voice. 6 [no obj] : to become darker or stronger in color
▪ The sunset deepened from a pale yellow to a bright orange. ▪ Rather than fading, the colors deepened in tone. ▪ The sky deepened to a dark blue. 7 ◊To deepen your breathing is to take more air into your lungs when you breathe.
▪ This class will deepen your understanding of economics. ▪ Living in the country's capital had deepened her knowledge of politics.
▪ The sunset deepened from a pale yellow to a bright orange. ▪ Rather than fading, the colors deepened in tone. ▪ The sky deepened to a dark blue.
— deep·en·ing /ˈdi:pəˌnɪŋ/ adjective
▪ It confirmed our deepening suspicions that she was planning to leave. ▪ A deepening [=worsening] financial crisis threatened the economy. ▪ the country's deepening poverty ▪ deepening shadows [=shadows that are becoming darker]
/ˈdi:pəˌnɪŋ/ adjective ▪ It confirmed our deepening suspicions that she was planning to leave. ▪ A deepening [=worsening] financial crisis threatened the economy. ▪ the country's deepening poverty ▪ deepening shadows [=shadows that are becoming darker]
