“I've seen more than a few people in my time who seem to equate dressing modestly with dressing, for lack of a better word, dumpily.”
“A middle-aged plump woman plodded dumpily through from the adjoining room and peered through her string-held glasses, curiously but as positively as she could muster.”
“It looks, at first, like a cauliflower, with the flowers nestling dumpily among the leaves.”