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diff --git a/crates/typst-library/src/model/strong.rs b/crates/typst-library/src/model/strong.rs
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+++ b/crates/typst-library/src/model/strong.rs
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+use crate::diag::SourceResult;
+use crate::engine::Engine;
+use crate::foundations::{elem, Content, Packed, Show, StyleChain};
+use crate::text::{TextElem, WeightDelta};
+
+/// Strongly emphasizes content by increasing the font weight.
+///
+/// Increases the current font weight by a given `delta`.
+///
+/// # Example
+/// ```example
+/// This is *strong.* \
+/// This is #strong[too.] \
+///
+/// #show strong: set text(red)
+/// And this is *evermore.*
+/// ```
+///
+/// # Syntax
+/// This function also has dedicated syntax: To strongly emphasize content,
+/// simply enclose it in stars/asterisks (`*`). Note that this only works at
+/// word boundaries. To strongly emphasize part of a word, you have to use the
+/// function.
+#[elem(title = "Strong Emphasis", keywords = ["bold", "weight"], Show)]
+pub struct StrongElem {
+    /// The delta to apply on the font weight.
+    ///
+    /// ```example
+    /// #set strong(delta: 0)
+    /// No *effect!*
+    /// ```
+    #[default(300)]
+    pub delta: i64,
+
+    /// The content to strongly emphasize.
+    #[required]
+    pub body: Content,
+}
+
+impl Show for Packed<StrongElem> {
+    #[typst_macros::time(name = "strong", span = self.span())]
+    fn show(&self, _: &mut Engine, styles: StyleChain) -> SourceResult<Content> {
+        Ok(self
+            .body()
+            .clone()
+            .styled(TextElem::set_delta(WeightDelta(self.delta(styles)))))
+    }
+}