English word improving comes from English improve

Detailed word origin of improving

Dictionary entry	Language	Definition
improve	English (eng)	(dated) To use or employ to good purpose; to turn to profitable account.. (intransitive) To become better.. (obsolete) To disapprove of; to find fault with; to reprove; to censure.. (obsolete) To disprove or make void; to refute.. (transitive) To make (something) better; to increase the value or productivity (of something).
improving	English (eng)	That tends to improve someone or something (especially (dated) to educate or morally better a person).