Underline part of a word

Try something like

\bSh(?=ah|am|adow\b)

Where you can add each variation of characters that can come after Sh by adding a | character followed by the character sequence. See a sample below

-Manan

Michael beat me to it :), but i have a slightly different variation

Sh(?=ah\b)

To cater to cases where the word is separated by something other than a space character. \b here defines the word boundary and is a zero length match. Rest all is explained brilliantly by Michael.

-Manan

Created a Character Style called "underline" that just underlines text.

Created a Paragraph Style called "body" that is applied to all of the text.

Within the body Paragraph Style created a GREP Style which applied the underline Character Style whenever it identified "Sh(?=ah )" where...

Sh
Represents the characters "Sh"

(?=ah )
Looks for the presence of the characters "ah " directly after the originally detected characters "Sh". This takes advantage of a feature called a Positive Lookahead.

One of the best parts of this method is that it is dynamic. Any text that you add that has the body Paragraph Style applied to it will automatically underline the first two letters of the word Shah.

If you are liking what this can do but have no idea what GREP is, feel free to ask away. We love GREP in this forum 😉