Undertake

usgb/ˌʌndərˈteɪk/Volume
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LampPro Tip 1/2
Serious PromisePlay
Using 'undertake' often suggests a serious, formal commitment. SlideHe undertook to serve his country with honor.
LampPro Tip 2/2
Long-term ResponsibilityPlay
'Undertake' implies a commitment that usually extends over time. SlideShe undertook the long-term task of writing her memoir.