Sentence:  He wondered what had become of the boys who were his companions: they were nearly thirty now; some would be dead, but others were married and had children; they were soldiers and parsons, doctors, lawyers; they were <WSD>staid</WSD> men who were beginning to put youth behind them. Had any of them made such a hash of life as he? 
Meaning of the word marked with <WSD> tags:  Not capricious or impulsive; sedate, serious, sober.