Перевод с японского на английский: 恒常
Словарь: main恒常名詞1 assiduity,
assiduousness,
ceaselessness,
concentration,
constancy,
continuousness,
incessancy,
incessantness,
perseverance,
perseveration,
persistence,
record,
stability,
staunchness,
steadfastness,
unvariedness.