on the up-and-up

on the up-and-up の類語

up-and-up, straight shooting, square dealing, open and aboveboard, on the level, foursquare, aboveboard, made, genuine, successful, triumphant, succeeding, bona fide, veritable, fortunate, authentic, coming, surefire, straight, open, square, prosperous

on the up-and-up の反意語

unsuccessful, counterfeit

on the up-and-up の言い換えを探すには

on the up-and-up（）の類語・言い換え（パラフレーズ）を、日本語訳つきで関連度順に並べています。英作文の語彙を増やしたいとき、長文読解で本文と選択肢の言い換えを見抜きたいときに使えます。