Inactive

Inactive[f] is an inactive form of f that does not evaluate.

Examples

Create an inactive integral:

Inactive[Integrate][x^2, x]

Activate the expression to evaluate it:

Activate[Inactive[Integrate][x^2, x]]
(* x^3/3 *)

Use inactive forms to represent unevaluated operations:

Inactive[Plus][1, 2, 3]

Please visit the official Wolfram Language Reference for more details.