一体 => …the heck; …in the world; …on earth N3
に[反「はん」]して/に[反「はん」]し/に[反「はん」]する/に[反「はん」]した => In contrast to A N2
Contrast,Surprise
... 反対に => on the contrary N3
Compare
一応 => more or less; pretty much; roughly; tentatively ~ N2
に応じて => depending on; in accordance with ~ N2
反面 => while, although; on the other hand~ N2
に反して => against; contrary to; in contrast to ~ N2
に[応「おう」]じて(は)/に[応「おう」]じ(た) => In response/reply to A, In line with A; That fits with A N2
Based, Focused, Depending on
…と (は) はんたい (反対)に => opposition; resistance; antagonism; objection; dissent N3
Compare