builtin -> built-in.
diff --git a/Doc/reference/datamodel.rst b/Doc/reference/datamodel.rst
index 5d612b8..865911f 100644
--- a/Doc/reference/datamodel.rst
+++ b/Doc/reference/datamodel.rst
@@ -1437,7 +1437,7 @@
.. index:: builtin: unicode
- Called to implement :func:`unicode` builtin; should return a Unicode object.
+ Called to implement :func:`unicode` built-in; should return a Unicode object.
When this method is not defined, string conversion is attempted, and the result
of string conversion is converted to Unicode using the system default encoding.
@@ -1516,7 +1516,7 @@
.. note::
This method may still be bypassed when looking up special methods as the
- result of implicit invocation via language syntax or builtin functions.
+ result of implicit invocation via language syntax or built-in functions.
See :ref:`new-style-special-lookup`.
@@ -1865,12 +1865,12 @@
.. method:: object.__reversed__(self)
- Called (if present) by the :func:`reversed` builtin to implement
+ Called (if present) by the :func:`reversed` built-in to implement
reverse iteration. It should return a new iterator object that iterates
over all the objects in the container in reverse order.
If the :meth:`__reversed__` method is not provided, the :func:`reversed`
- builtin will fall back to using the sequence protocol (:meth:`__len__` and
+ built-in will fall back to using the sequence protocol (:meth:`__len__` and
:meth:`__getitem__`). Objects that support the sequence protocol should
only provide :meth:`__reversed__` if they can provide an implementation
that is more efficient than the one provided by :func:`reversed`.