
Need some cool words that start with O? You’ve landed on the right page, I’ve put together a list with the best words I could find starting with the letter O.
Whether it’s cool-sounding words you need or words that are pretty cool, awesome, interesting, fun, etc – hopefully, you’ll find some inspiration below.
Finding the right sounding words with the right meaning can be incredibly powerful. Good luck finding what you’re looking for:
Cool Words That Start With O
Oasis – a fertile spot in a desert, where water is found.
Objective – (of a person or their judgment) not influenced by personal feelings or opinions in considering and representing facts.
Obliged – make (someone) legally or morally bound to do something.
Obviousness – the property of being easy to see and understand. noticeability, noticeableness, patency. conspicuousness.
Omni – all; of all things.
Onomatopoeia – the formation of a word from a sound associated with what is named.
Oodles – a very great number or amount of something.
Oomph – the quality of being exciting, energetic, or sexually attractive.
Optimal – best or most favorable; optimum.
Optimism – hopefulness and confidence about the future or the success of something.
Opulent – ostentatiously costly and luxurious.
Orotund – (of a person’s voice) resonant and imposing.
Outfox – defeat (someone) by being more clever or cunning than them.
Outlandish – looking or sounding bizarre or unfamiliar.
Outstanding – exceptionally good.
Oxymoron – a figure of speech in which apparently contradictory terms appear in conjunction.
Are there any cool words you like that didn’t see on this list? Drop me a comment below and I’ll be happy to add them, thanks!
Want more cool words starting with different letters in the alphabet? Just click one of the letters below to see a list!
A | B | C | D | E | F | G | H | I |
J | K | L | M | N | O | P | Q | R |
S | T | U | V | W | X | Y | Z |
Image credits – Photo by Josh Rakower on Unsplash

Phil lives in England, UK, and has around 20 years experience as a professional life, career and executive coach. He started this blog to help others find and define their own self development journey. Blogging about a wide range of topics to help facilitate a better future.