| October |
the tenth month of the year. October has thirty-one days. |
| octopus |
a sea animal with a soft, rounded body and eight long tentacles. Octopuses are carnivores that eat crabs, lobsters, and other small sea animals. They are mollusks and are closely related to squids. |
| odd |
different from what is expected or usual; strange. [4 definitions] |
| oddity |
a strange or unusual thing, person, or event. [2 definitions] |
| odd number |
a whole number that cannot be divided exactly by 2. |
| odds |
the probability that one thing is more likely to happen than another. [2 definitions] |
| odds and ends |
a group of different kinds of items; bits and pieces; scraps. |
| odor |
smell or scent. |
| odour |
a spelling of "odor" used in Canada and Britain. See "odor" for more information. |
| of |
used to show distance or separation from. [10 definitions] |
| of course |
certainly. [2 definitions] |
| off |
away from a surface. [13 definitions] |
| off base |
wrong; mistaken |
| offence |
a spelling of "offense" used in Canada and Britain. See "offense" for more information. |
| offend |
to cause to be angry, annoyed, or insulted. |
| offense |
the act of breaking a law or rule or doing something wrong; crime; sin. [3 definitions] |
| offensive |
not pleasant; disagreeable. [4 definitions] |
| offer |
to present to be accepted or refused. [6 definitions] |
| offering |
that which is offered, either as a gift or for sale. |
| off guard |
not ready; careless. |
| offhand |
done without thinking or preparing ahead of time. |