only / alone / -ism (in Chinese, a prefix, often combined with a suffix such as 主義|主义[zhu3 yi4] or 論|论[lun4], e.g. 唯理論|唯理论[wei2 li3 lun4], rationalism)
唯
=
口
+
隹
:
Willy Walrus (w) and the sparrow (隹) have been locked in the Eiffel Tower's kitchen (ei2) for days now. The only (唯) edible thing there is left is a mandarin (口), but mandarins are the only (唯) thing they don't like.