What does O mean?
O means “Descendent of irish surnames formed by prefacing o”. It is a boy name of unknown origin.
Origin, gender and faith
- Origin: unknown – see more unknown names.
- Gender: Boy – browse boy names.
- Popularity: ranked #4710 in BabyNameMeaningz data.
Sound, spelling and pronunciation
O has 1 letters and 1 syllable, made of 1 vowels and 0 consonants (1 different letters). Its sound is best described as: open, flowing ending.
Press Listen at the top of the page to hear the name spoken aloud, which helps when you are comparing how a name sounds next to a surname or a sibling’s name.
How the lucky number, colour and star sign are worked out
These three facts are calculated from the spelling of O with simple, fixed rules. They are for fun and are not a prediction or a real horoscope.
Lucky number
6Each letter gets its place in the alphabet (A=1 … Z=26): O=15 = 15. Then the digits are added until one digit is left: 1 + 5 = 6. Result: 6.
Favorite colour
IndigoThe lucky number picks the colour from a fixed table. O has lucky number 6, so the colour is Indigo.
Star sign
GeminiOnly the first letter counts (O). The twelve signs repeat along the alphabet: A = Aries, B = Taurus … L = Pisces, then M = Aries again. It is not based on a birth date.
Couple names that go with O
Partner names that match O by origin, faith, length and sound (Girl names). The percentage is a style match, and the blend is a fun combined name.
How is the match % worked out?
Start at 60. Same origin +9, same faith +6, similar length up to +8, different first letter +5, same last two letters +3 (maximum 99). Blend = first half of one name + second half of the other.
Sibling names for O
Names that sit well next to O: similar origin and style, with a close length, sound or ending.
How are siblings chosen?
Start at 45. Same origin +10, same faith +8, same first letter +8, same last two letters +8, close length up to +10, close syllables up to +8, very similar spelling +6. Brothers and sisters are ranked separately.
Brother names
Sister names
Twin name ideas for O
If O is one twin’s name, these pair with it in different ways. Each percentage shows how well the pair fits that style.
How are twin names scored?
Same scoring as couples, plus a style bonus: Same first letter +18 (else −8), Same ending +18 (else −6), Balanced +5 for a different first letter and +3 for the same ending.
Same first letter
Same ending
Balanced match
Names with a similar meaning
Names whose meaning shares a key idea with O (descendent, irish).
How are similar meanings found?
We take the first two meaningful words of the meaning (4+ letters, common words removed) and list names whose meaning contains the same word.
Frequently asked questions
What does O mean?
O means “Descendent of irish surnames formed by prefacing o” and is of unknown origin.
What is the origin of O?
In our collection O is listed as a name of unknown origin.
Is O a boy or a girl name?
O is listed as a boy name.
What is the lucky number for O?
By name numerology (A=1 … Z=26) the lucky number for O is 6, with the star sign Gemini. This is for entertainment only.
How do you pronounce O?
O has 1 syllable. Use the listen button on this page to hear it spoken aloud.
Which names have a similar meaning to O?
Names with a related meaning include Yadav, Detlef, Khalaf, Olavo, Lefa, Keyli.