look up anything, like your first name:
1. Omgosh
Similar to OMG (Oh my god!), but ending with a fashionable "osh" to imply "Oh my gosh!", which isn't "Oh my god!", which is important, if importance was the issue. Which it's not.

It's just short for "Oh my gosh!".
Omgosh that beast is hawt.
by Serra Sep 17, 2004 add a video
2. Omgosh
Less offensive than "Oh my God" It became a combination of "Omg" and "gosh." Used as a expression of surprise, shock, or even joy
"Hey did you hear school's canceled today?"
-Omgosh, awesome!
Or

"Omgosh, did you hear what happened to her???"
by Tasha H (O yea!) May 15, 2005 add a video
3. omgosh
means oh my gosh. used by bible bashers who dont want to use gods name in vein.
omgosh look at that!
rss and gcal