Tediously rhymes with:
hideously, studiously, contemporaneously, curiously, enviously, erroneously, extraneously, furiously, gloriously, harmoniously, hideously, hilariously, indubiously, instantaneously, laboriously, mysteriously, notoriously, obviously, precariously, previously, seriously, simultaneously, spontaneously, studiously, unceremoniously, variously, vicariously
Tediously sounds like:
tackle, tagle, tassel, taxol, teagle, teasley, tecla, tequila, tequiliu, tesla, tesol, thecla, thekla, thickly, thiokol, this'll, thusly, tickle, toggle, tougaloo, tousley, towsley, tuccillo, tuggle, tugwell, tusla, tussle, tuzla, twichell, twitchell