Synonyms of obliquely

2 Syllables
aslant, slantways, slaunchways, askew, askant
3 Syllables
sidelong, slantwise, broadside, crookedly, askance, sideways
4 Syllables
cater-corner, catty-corner, cornerwise, kitty-corner, disdainfully, diagonally, catawampus, topsy-turvey
5 Syllables
disapprovingly