不苟

not lax / not casual / careful / conscientious

no; not so / (bound form) not; un-

surname Gou

if / supposing / careless / negligent / temporarily

not one thread loose (idiom); strictly according to the rules / meticulous / not one hair out of place

lit. not even one stroke is negligent (idiom) / fig. to write characters (calligraphy) in which every stroke is placed perfectly