努

ド

つと.める

努, 奴, 女, 又, 力

力

toil, diligent, as much as possible

努力(どりょく): great effort; exertion; endeavour; endeavor; effort
努める(つとめる): to endeavor (endeavour); to try; to strive; to make an effort; to exert oneself; to be diligent
努めて(つとめて): (1) as much as possible; diligently (2) make an effort!; work hard!