I'm looking to use a greek diacritic over an English letter. More specifically, I would like to use the greek 'rough breathing' diacritic,


but I would like to place it not over a greek letter, but rather over the English letter $x$. Babel seems to only allow me to place a diacritic of this sort over a greek vowel.

  • I am using XeLatex, which processes UTF-8 directly. Which engine are you using. Is that engine required? Oct 18, 2019 at 12:41
  • I am just using LaTeX. I have a strong preference to remain with that. Oct 18, 2019 at 12:55
  • I can see how \` doesn't fit, because of the shape. But is the shape of ` sufficient or, because it is inverted in some fonts, also not acceptable? Oct 18, 2019 at 13:05

2 Answers 2


You can use the accents provided by the LGR encoding:

\usepackage[LGR,T1]{fontenc} % or OT1





Pick the ones you need. You may also do \newcommand{\rb}[1]{\accdasia{#1}} so you can simply type \rb{x}.


If you need the dasia in math mode, it's even simpler:

\usepackage[LGR,T1]{fontenc} % or OT1

% lgrenc.def has
% \DeclareTextAccent{\accdasia}{LGR}{60} % δασεῖα spiritus asper (rough breathing)




enter image description here


Maybe something like this?



\rb x\greektext{tan}

enter image description here

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