strait-laced

adj (derog 贬) having or showing a very strict attitude to moral questions; prim and proper （在道德问题上）极拘谨的; 一本正经的; 古板的: My old aunts are very strait-laced. 我的老姨妈都很古板.

straggle, straggler, straggling, straggly, straight, straight fight, straight man, straight-edge, straighten, straightforward, straightforwardly, straightforwardness, straightness, straightway, strain, strain every nerve, strained, strainer, strait, strait-jacket, straitened, strand, stranded, strange, strangely, strangeness, stranger, strangle, stranglehold, strangler, strangulate, strangulation, strap, straphanger, strapless, strapped, strapping, strata, stratagem, strategic,