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)

= + : 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.
yes

唯 character breakdown

mouth / classifier for things with mouths (people, domestic animals, cannons, wells etc) / classifier for bites or mouthfuls

Mnemonic symbol: 口 shall be represented by a mandarin. Karl Marx (k-) is enjoying a mandarin in the outhouse's living room (ou3).
short-tailed bird

= + : A sparrow. Julian Giant Squid often visits the sparrows living in front of the Eiffel Tower, and plays his flute for them.

Characters with 唯 as component

cry of hen pheasant

Words with 唯

only / just (i.e. it is only that...) / all except / unique
for fear that / lest / also written 惟恐
to seek nothing but profit (idiom); personal profit before everything / self-seeking
materialism, philosophical doctrine that physical matter is the whole of reality
philosophy of idealism, the doctrine that external reality is a product of consciousness
Actual practice is the sole criterion for judging truth (item from Deng Xiaoping theory, from 1978)
historical materialism (Marx's theory of history)
fan of one particular member of a pop idol band who denigrates and defames the other members

Sentences with 唯

唯 currently does not appear in any sentence.