What is a synonym for code?

The best synonym for "code" depends on the context. Here are some options, depending on what you mean by "code":

For programming code:

* Script

* Program

* Source code

* Software

* Algorithm

* Instructions

* Syntax

* Language

For secret codes:

* Cipher

* Cypher

* Encryption

* Cryptography

* Secret language

For codes of conduct or rules:

* Protocol

* Standard

* Guidelines

* Regulations

* Law

For other meanings of "code":

* Signal

* Symbol

* Pattern

* System

To choose the best synonym, consider the specific context in which you're using the word "code".