regression of y on x regression toward the mean regressive regressive regressive-reconstructive approach regressively regressiveness regressive staining regressivities regressivity
| regressor regressors regret regretful regretfully regretfulness (current term) regretfulnesses regrets regrettable regrettably
| regretted regretter regretters regretting regrew regrind regrinding regrinds regroom regroomed
|