Inactivate

Inactivate[expr] replaces all instances of f with Inactive[f] for symbols f used as heads in expr.

• Inactivate[expr, patt] inactivates all symbols in expr that match the pattern patt.

Examples

Inactivate[1 + 2 + 3]
(* Inactive[Plus][1, 2, 3] *)

Please visit the official Wolfram Language Reference for more details.