Keep in mind they can encapsulate any meaning.

For jingle: bells, clear sound, cleansing, peace. Christmas, snow, giving, cheer, belief, and wonder (Santa and so forth). A rhyme or tune for advertisements, a slogan, loud and frenetic and attention-grabbing. Repetitious, unforgettable sounds. Ring any bells?

For stride: long stride, heavy stride, a lot covered or done with little effort or simple movements. To take something in stride means to weather, acknowledge, or confront it without problem or distress. You're taking it to mean speed because you want someone with superspeed, but that could also take the form of blinking or flash-stepped, moving a distance in a single stride.

Neo means new, an iteration or evolution of the old, the future. Such an epithet could allow a character to upgrade objects to futuristic versions. Shoes to rocket boots, water gun to a laser blaster, and so forth. Or the character could exhibit hyper-adaptation, able to adjust and grow stronger in response to new stimuli, with the new changes reverting when not in use.

Epithets should not be viewed simply as superpowers, but as powersets or suites of magic stemming from one's conception of the word. When one thinks 'stride' would one really jump to 'super fast'?

[quote=@Gentlemanvaultboy]
See, this is why I asked because I was developing this whole back story based around it seeming like he's a useless brown noser because he can't prove he's actually doing anything.

I'll re-work something.
[/quote]

That could still apply. Maybe your character doesn't have a strong command of his epithet yet. As long as he's not at the point where its too powerful I'm down.