well-founded
UKUS
释义
adj.
Based on good evidence or sound reasoning
有充分根据的，理由充分的
词根拆分
词根派生well-root
+
founded底部、基础、基底
=well-founded
well（稳固地）+ founded（垫了底的）= 立在确凿事实的底子上。unfounded 的反义。
例句
- 1.
Their concerns about safety were well-founded.
他们对安全的担忧是有充分根据的。