Learn French: Cette silhouette sublime manque d'inspiration. - This sublime silhouette lacks inspiration.

The verb manquer changes meaning depending on its preposition. Here, manquer de means to lack something. If you used it without a preposition as a direct transitive verb, it would mean to miss an event or a physical target, like in manquer le train (to miss the train).

Why is there no definite article before inspiration? Shouldn't it be manque de l'inspiration?

When manquer de means "to lack" and is followed by an abstract concept or an uncountable noun, the article is dropped. You say manquer d'inspiration (to lack inspiration) or manquer de temps (to lack time), rather than using de l'.

How does this use of manquer differ from how we say "I miss someone"?

To express emotionally missing someone, French uses the preposition à and flips the subject and object, like in tu me manques (you are missing to me / I miss you). This sentence uses manquer de because it describes an actual lack or shortage of something, not emotional longing.

Does silhouette just mean a shadow or outline here, like it usually does in English?