weak-kneed

adj (fig 比喻) (of a person) lacking determination or courage （指人）无决心的, 无勇气的.

way, way-bill, way-out, wayfarer, wayfaring, waylay, Wayle, wayside, wayward, waywardness, WC, WCC, we, we'd, we'll, we're, we've, WEA, weak, weak form, weak-minded, weak-mindedly, weak-mindedness, weaken, weakling, weakly, weakness, weal, wealth, wealthily, wealthy, wean, weapon, weaponry, weapons, wear, wear off, wear out, wearable, wearer,