This post includes 120 adjectives that start with O. An adjective is a part of speech that qualifies as a noun or pronoun. It explains something more about the noun or a pronoun. Adjectives are the content words in English grammar. Content words add to the language with time and act as open-class words.
Examples:
Good, bad, long, short, red, wide, two, etc.
This is a good book.
I like red color.
The tail of parrot is long.
Two wide feet.
Degrees of Adjectives:
There are 3 degrees of Adjectives:
1)Absolute _____________Â Tall
2)Comparative _____________Â Taller
3)Superlative __________________Â Tallest
Absolute Degree modifies one noun or pronoun.
Comparative Degree modifies and compares two nouns or pronouns.
Superlative Degree modifies and compares more than two nouns or pronouns.
Let’s have a look at 120 adjectives that start with O:
Adjectives that Start with the Letter ‘O’:
Odd | Offload | Oily | Overt |
Old | Optional | Oblate | Oceanic |
Off | Optimum | Orbital | Ovarian |
Only | Outgoing | Optical | Overcast |
Oval | Obstetric | Ornery | Opposite |
Okay | Obscene | Off-air | Outdated |
Open | Observer | Ousted | Opponent |
Older | Odorous | Ongoing | Octonary |
Obese | Officiary | Off-peak | Ocellated |
Obtuse | Obedient | Off-limits | Ochreous |
Odious | Operative | One-sided | Octagonal |
Online | Oblivious | Organized | Octahedral |
Oldest | Obstinate | Obnoxious | Opposable |
Offbeat | Offended | Oppressive | Optimized |
Optimal | Obsessed | Outspoken | Obstructive |
Orange | Obtrusive | Outlandish | Omniscient |
Official | Obstruent | Outrageous | Obfuscatory |
Outlaw | Obligated | Obsequious | Outstanding |
Offhand | Objective | Omnipotent | Outrageous |
Oriental | Oblivious | Obsessional | Oxymoronic |
Original | Occupied | One-legged | Overbearing |
Opulent | Offensive | Omnivorous | Oceangoing |
Olympic | Olympian | Oncological | Opinionated |
Optimist | Opposing | Orthopaedic | Openhearted |
Offline | Offhanded | Odd-looking | Opportunistic |
Obvious | One-sided | Omnipresent | Old-fashioned |
Ominous | Optimistic | Ostentatious | Orchestrated |
Ordinary | Outraged | Occupational | Overassertive |
Oblique | Observant | Objectionable | Overambitious |
Obliging | Orphaned | Observational | Overaggressive |
Frequently Asked Questions:
Q1: What are irregular adjectives?
Ans: Irregular adjectives do not follow any rule. They make their comparative and superlative degrees in different ways.
Examples:
Absolute  Comparative     Superlative
Good     Better           Best
Bad      Worse           Worst
Little     Less              Least
Many    More             Most
Q2: What are attributive adjectives?
Ans:Â Attributive adjectives are placed before the noun.
E.g. Red shirt, tall boy, pretty girl, etc.
(Red, tall, and pretty are attributive adjectives)
Q3: What are predicative adjectives?
Ans:Â Predicative adjectives are placed after the noun or pronoun.
She is busy.
Ahmed is obedient.
Q4: What are adjectives that can only be predicative or attributive?
Ans: These are as follows:
Adjectives that can only be Predicative
afraid, asleep, alike, alone, ashamed, awake, aware
Adjectives that can only be Attributive
elder, eldest, live, old, little, mere, and sheer
Final Words:
This post includes a comprehensive list of 120 adjectives that start with ‘o’. It explains the definitions of adjectives, content words, attributive adjectives, and predicative adjectives. For more lectures on English grammar, visit our website by clicking the link below: