noun
endurance; forbearance; patience; self-restraint
Archaic noun. In modern Japanese, these concepts are usually expressed with words like 忍耐 (にんたい) or 我慢 (がまん). This form is mostly encountered in classical contexts or as a component in compounds.
「忍」は古語で、耐え忍ぶことを意味する。
忍 is an archaic word meaning to endure or bear patiently.