Formally rhymes with:
informally, abnormally, informally, normally, abnormally, informally, normally, abnormally, abysmally, amalie, anomaly, dismally, dymally, emelie, emilie, facsimile, family, gloomily, homily, informally, minimally, multifamily, normally, remaley, remaly, steamily, subfamily, supremely, trincomalee
Formally sounds like:
farinella, farnall, farnell, farnley, fermoyle, firmly, formal, formula, fornal