'Fearless" in Irish Gaelic?

So here's the thing.. I am going to probably get a tattoo that says "Fearless' in gaelic but I want it probably on my neck, very small near my hairline, or as a sort of tattoo ring around my finger. I have heard that the gaelic word is: neamheaglach and that seems a bit long for either place I mentioned wanting it so does anyone know a similar word for Fearless that might be shorter in gaelic that I might use? Also, does anyone know the gaelic word for 'joyful'? Any help is greatly appreciated!