Highlight specific keywords in the terminal as they appear

As an additional usage of the selected answer, I'd like to suggest adding a tigger for "smart quotes" with the regex [”“’‘]

This will save you some day when a coworker sends you a line of code via a chat mechanism (like Slack) and the quotes get automagically "improved". The trigger won't fire as you paste/type them, but they will happen after the line scrolls up your terminal. So, it won't prevent the mistake, but it will save you time wondering why the command failed.

A Profile-based trigger can highlight as much or little of a line as you choice (via the regex).

To highlight just a "word" in a line, you can create a simple Highlight Text trigger, i.e.:

Results in:

Ref: https://iterm2.com/documentation-triggers.html

Below is where you will find Triggers