not ... at all

even if ...,...cannot

very, exceedingly, awfully / (before a negative form) not at all, at all, by no means

excellent, superior, outstanding

excellence

improvement, an action taken to improve / improvement, a spontaneous change for the better

(transitive) to improve, to make better / (intransitive) for something to improve on its own

betterment, improvement, amelioration

a student (usually of a university, sometimes of a high school)

(Buddhism) think on the power of Kannon