diff --git a/numpy/_core/defchararray.pyi b/numpy/_core/defchararray.pyi
index 776962c53998..43005745bfab 100644
--- a/numpy/_core/defchararray.pyi
+++ b/numpy/_core/defchararray.pyi
@@ -555,7 +555,7 @@ def add(x1: S_co, x2: S_co) -> NDArray[np.bytes_]: ...
 @overload
 def add(x1: _StringDTypeSupportsArray, x2: _StringDTypeSupportsArray) -> _StringDTypeArray: ...
 @overload
-def add(x1: T_co, T_co) -> _StringDTypeOrUnicodeArray: ...
+def add(x1: T_co, x2: T_co) -> _StringDTypeOrUnicodeArray: ...
 
 @overload
 def multiply(a: U_co, i: i_co) -> NDArray[np.str_]: ...
diff --git a/numpy/_core/strings.pyi b/numpy/_core/strings.pyi
index 52d244b36ccd..b187ce71d25c 100644
--- a/numpy/_core/strings.pyi
+++ b/numpy/_core/strings.pyi
@@ -54,6 +54,7 @@ __all__ = [
     "translate",
     "upper",
     "zfill",
+    "slice",
 ]
 
 _StringDTypeArray: TypeAlias = np.ndarray[_AnyShape, np.dtypes.StringDType]
@@ -494,3 +495,17 @@ def translate(
     table: str,
     deletechars: str | None = None,
 ) -> _StringDTypeOrUnicodeArray: ...
+
+#
+@overload
+def slice(a: U_co, start: i_co | None = None, stop: i_co | None = None, step: i_co | None = None, /) -> NDArray[np.str_]: ...  # type: ignore[overload-overlap]
+@overload
+def slice(a: S_co, start: i_co | None = None, stop: i_co | None = None, step: i_co | None = None, /) -> NDArray[np.bytes_]: ...
+@overload
+def slice(
+    a: _StringDTypeSupportsArray, start: i_co | None = None, stop: i_co | None = None, step: i_co | None = None, /
+) -> _StringDTypeArray: ...
+@overload
+def slice(
+    a: T_co, start: i_co | None = None, stop: i_co | None = None, step: i_co | None = None, /
+) -> _StringDTypeOrUnicodeArray: ...
diff --git a/numpy/lib/_user_array_impl.pyi b/numpy/lib/_user_array_impl.pyi
index c1c72b2320f1..13c0a0163421 100644
--- a/numpy/lib/_user_array_impl.pyi
+++ b/numpy/lib/_user_array_impl.pyi
@@ -2,7 +2,7 @@ from types import EllipsisType
 from typing import Any, Generic, Self, SupportsIndex, TypeAlias, overload
 
 from _typeshed import Incomplete
-from typing_extensions import TypeVar, deprecated, override
+from typing_extensions import TypeVar, override
 
 import numpy as np
 import numpy.typing as npt
@@ -220,8 +220,6 @@ class container(Generic[_ShapeT_co, _DTypeT_co]):
 
     #
     def copy(self, /) -> Self: ...
-    @deprecated("tostring() is deprecated. Use tobytes() instead.")
-    def tostring(self, /) -> bytes: ...
     def tobytes(self, /) -> bytes: ...
     def byteswap(self, /) -> Self: ...
     def astype(self, /, typecode: _DTypeLike[_ScalarT]) -> container[_ShapeT_co, np.dtype[_ScalarT]]: ...
diff --git a/numpy/ma/core.pyi b/numpy/ma/core.pyi
index f457f18d57bd..7e87611037b9 100644
--- a/numpy/ma/core.pyi
+++ b/numpy/ma/core.pyi
@@ -5,7 +5,7 @@ from collections.abc import Sequence
 from typing import Any, Literal, Self, SupportsIndex, TypeAlias, overload
 
 from _typeshed import Incomplete
-from typing_extensions import TypeIs, TypeVar, deprecated
+from typing_extensions import TypeIs, TypeVar
 
 import numpy as np
 from numpy import (
@@ -1057,8 +1057,6 @@ class MaskedArray(ndarray[_ShapeT_co, _DTypeT_co]):
     def toflex(self) -> Incomplete: ...
     def torecords(self) -> Incomplete: ...
     def tolist(self, fill_value: Incomplete | None = None) -> Incomplete: ...
-    @deprecated("tostring() is deprecated. Use tobytes() instead.")
-    def tostring(self, /, fill_value: Incomplete | None = None, order: _OrderKACF = "C") -> bytes: ...  # type: ignore[override]
     def tobytes(self, /, fill_value: Incomplete | None = None, order: _OrderKACF = "C") -> bytes: ...  # type: ignore[override]
     def tofile(self, /, fid: Incomplete, sep: str = "", format: str = "%s") -> Incomplete: ...
 
diff --git a/numpy/strings/__init__.pyi b/numpy/strings/__init__.pyi
index 2f924dca0b5d..b2fb363531d4 100644
--- a/numpy/strings/__init__.pyi
+++ b/numpy/strings/__init__.pyi
@@ -36,6 +36,7 @@ from numpy._core.strings import (
     rjust,
     rpartition,
     rstrip,
+    slice,
     startswith,
     str_len,
     strip,
@@ -92,4 +93,5 @@ __all__ = [
     "decode",
     "encode",
     "translate",
+    "slice",
 ]
diff --git a/numpy/typing/tests/data/reveal/strings.pyi b/numpy/typing/tests/data/reveal/strings.pyi
index 746e804ce577..18bd252d5ff9 100644
--- a/numpy/typing/tests/data/reveal/strings.pyi
+++ b/numpy/typing/tests/data/reveal/strings.pyi
@@ -190,3 +190,7 @@ assert_type(np.strings.str_len(AR_T), npt.NDArray[np.int_])
 assert_type(np.strings.translate(AR_U, ""), npt.NDArray[np.str_])
 assert_type(np.strings.translate(AR_S, ""), npt.NDArray[np.bytes_])
 assert_type(np.strings.translate(AR_T, ""), AR_T_alias)
+
+assert_type(np.strings.slice(AR_U, 1, 5, 2), npt.NDArray[np.str_])
+assert_type(np.strings.slice(AR_S, 1, 5, 2), npt.NDArray[np.bytes_])
+assert_type(np.strings.slice(AR_T, 1, 5, 2), AR_T_alias)