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However, these aircraft were generally extremely frail and short-lived.
en.wikipedia.org She was still photogenic, but so thin that she was sometimes described as frail or waiflike, and her husband sometimes worried about her weight.
en.wikipedia.org His obituary states that he had a frail physique and suffered from ill health.
en.wikipedia.org She took charge of the kings schedule and was an indispensable aide and advisor, despite her frail health and many political enemies.
en.wikipedia.org The king was quite frail as a boy, and several alerts led to concern for his life.
en.wikipedia.org