character of human (personality), or of things.

to decide to do something: to do something on purpose / to perform a maneuver, to carry out a tactical action / to decide on an opinion: to believe in an opinion firmly

stubborn; obstinate

stubbornness; obstinacy

not easily

quite; very; pretty / considerably; fairly; rather

中々: very, quite, considerably, rather, by no means (with negative verb)

very, quite, considerably, rather / by no means (with negative verb)

to change, to make different / to move or shift to a different time or place

potential of 変える (kaeru): to be changeable / passive of 変える (kaeru): to be changed