straightforward Antonyms

thorny shameful sidelong sigmoid sinuate sinuation sinuose sinusoid sinusoidal shady semicircular rejective riddling rippled rivose rogue romantic roundabout scheming skulking slinking swirled syncretic tacit tangly technical telestic thespian thievish supermundane subtle slippery sly snide sophistical spirally spurious sticky subterrestrial reexamination recondite puzzling oblique obscure operatic orbital orphic overdelicate overscrupulous palpation