[Tex/LaTex] How to change the font size of a particular letter

fontsfontsize

I referred the link : How do I change the font of a letter?. But the link didn't help me out. I would like to achieve this:

enter image description here
Here is the MWE though I know it isn't :(:

\documentclass{article}
\begin{document}
Hello World
\end{document}

Best Answer

Taking into consideration the questions by the OP, and following both David's and John's answer, I'm trying to include a wider response:

If you just want to get a few letter in a bigger size than the others, you can ---as stated by the other answers--- just use {\huge H}ello {\huge W}orkd.

If you want to have a Drop Cap, you can use the lettrine package. E.g.:

\documentclass{report}

\usepackage{lettrine}

\begin{document}

{\huge H}ello {\huge W}orld.

This is a regular line.  Lets say you want a drop cap in the next chapter.

\chapter{Chapter Name}

\lettrine{T}{his} is a beautiful drop cap.  If you want to change the size of it, please refer to the lettrine package documentation.

\end{document}

Where the result is:

enter image description here

enter image description here

Related Question