Regex using word boundary but word ends with a . (period)

Question

want to match word i.v. case insensitive

have pattern

(?i)\\bi\\.v\\.

but want a word boundary on the end
the abov

Answer 1

About your current regex:

You don't need to have \b after dot since dot is not considered a word character but of course dot needs to be escaped:

(?i)\bi\.v\.

But you do need \b before i to make sure it doesn't match e.g. hi

EDIT: (Based on your further edits)

Try this regex:

(?i)\bi\.v\.(?=\s|$)