English Words: O
15,494 words · Page 133 of 310
The practice of taking advantage of any situations or people to achieve an end, often with no regard for principles or consequences.
Someone who takes advantage of any opportunity to advance their own situation, placing expediency above principle.
The cost of an opportunity forgone (and the loss of the benefits that could be received from that opportunity); the most valuable forgone alternative.
The practice of servicing equipment when it is convenient to do so, rather than on a fixed schedule.
A person who subsists on still-edible food that has been or was going to be discarded.
The condition or quality of being opposable (capable of being placed opposite to something else).
To attempt to stop the progression of; to resist or antagonize by physical means, or by arguments, etc.; to contend against.
A person who holds a position in an organization, sports team, or the like, that corresponds to that held by another person in another organization; a counterpart
A side, party (e.g. a team or armed force) seen as adversary, enemy etc. opposite one (or more) other(s), as in a battle or team sports competition.
Placed at the same node with a leaf, but separated from it by the whole diameter of the stem.
Spelling & Dictionary Insight
The English alphabetical index for the letter O contains 15,494 headwords drawn from our Wiktionary-derived dictionary table. At 50 entries per page the browse splits into 310 pages, and you are currently viewing page 133. Every row above is a dictionary-backed entry with a canonical slug, and each links through to a full definition page with pronunciation, senses, etymology, and related-word data where available.
On this page 50 of 50 entries carry a part-of-speech tag and 50 carry at least one stored definition. Coverage varies across letters because Wiktionary volunteers build entries at different speeds for different parts of the alphabet, letters with common starting sounds (S, C, T, P) usually have the densest coverage, while less frequent starters (X, Q, Z) tend to have shorter but more specialised lists. PlainSpell surfaces whatever data is present and links back to the source when a definition is not yet recorded.
For readers using this index as a spelling reference, the guarantee is that every form you see on the list is a documented English headword, not a guess, not a derived inflection lacking a lemma row. If a word you expected to find is absent from the "O" list, it usually means the form exists only as an inflection of another lemma (e.g. a past participle stored under the infinitive) or the entry has not yet been imported from Wiktionary. Use the search bar or the misspelling lookup to resolve these cases.