@Dean-Lesner ,
TEST{TAB} does not autocomplete to TESTING on a fresh unzip of v7.9.5-64bit (portable) or in my standard install of v8.1. In the portable 7.9.5, I installed the DSpellCheck and its en_US dictionary, and that didn’t change the behavior. (I tried the DSpellCheck, just because you mentioned it, but its spellcheck dictionary is not used for Notepad++'s auto-completion, and I don’t think that DSpellCheck itself hooks into the auto-completion feature of Notepad++.)
The only way I can replicate your problem in this setup is if there is the word TESTING someplace else in the document, but not the word TEST.
Thus, either you have non-standard settings somewhere, and/or you have some other plugin that is influencing the auto-complete. If you show us your ? menu’s Debug Info, as well as a screenshot of your Settings > Preferences > Auto-Completion, and we might be able to offer insight (that will tell us not only your exact version of Notepad++, but also what plugins you have installed)
AFAIK, there is no way to remove a specific word from the auto-completion list, because the default just uses words in the current document, and words specific to the current lexer (programming language)
Workarounds:
You could type TEST{ESC}{TAB}, which will take you out of auto-completion mode before hitting the TAB
You could use Auto-completion settings, and change the #-characters to something 5 or higher (so that TEST isn’t enough characters to trigger auto-completion)
You could use the Auto-completion settings to turn off word completion (either by selecting
Function Completion, or by unchecking
Enable auto-completion on each input)