The AI-powered English dictionary
comparative more improved, superlative most improved
That has been made better; enhanced. quotations examples
The second is to develop a new generation of further improved contrast agent that can yield more intense myocardial contrast after intravenous injection.
2012, J. R. Shapiro, S. A. Reisner, Richard S. Meltzer, “Clinical Applications of MCE”, in Samuel Meerbaum, Richard S. Meltzer, editors, Myocardial Contrast Two-dimensional Echocardiography
"When we're finished in 2024, this upgrade programme will provide a much-improved railway between London Waterloo and Portsmouth," said NR's Wessex Route Director Mark Killick.
2022 January 12, “Network News: Portsmouth line upgrade set to begin”, in RAIL, number 948, page 12
simple past and past participle of improve examples