4-letter words starting with op
- opac — Online Public Access Catalog
- opah — a large, deep-bodied, brilliantly colored, oceanic food fish, Lampris regius.
- opal — a female given name.
- opan — Oregon Public Affairs Network
- opec — an organization founded in 1960 of nations that export large amounts of petroleum: formed to establish oil-exporting policies and set prices.
- oped — a newspaper page devoted to signed articles by commentators, essayists, humorists, etc., of varying viewpoints: the Op-Ed of today's New York Times.
- open — not closed or barred at the time, as a doorway by a door, a window by a sash, or a gateway by a gate: to leave the windows open at night.
- oper — (Internet) A network operator on IRC.
- opes — Third-person singular simple present indicative form of ope.
- opia — Plural form of opium.
- opie — (obsolete) opium.
- opp. — opposite
- oppf — Omega Psi Phi Fraternity
- oppo — (British, informal) A friend, associate or colleague.
- opps — Misspelling of oops.
- opra — Occupational Pensions Regulatory Authority
- opry — (Appalachian) opera.
- ops5 — (language) A programming language for rule-based production systems. A rule consists of pre-condition(s) and a resulting action. The system checks its working memory to see if there are rules whose pre-conditions are satisfied, if so, the action in one selected satisfied rule is executed. There is a public domain implementation of an OPS5 interpreter written by Charles L. Forgy <[email protected]> in 1977. It was first implemented in Lisp and later in BLISS. It was also ported to Common Lisp by George Wood and Jim Kowalski. See also C5, OPS83, OPS4, OPS5+, OPS83. Inference Engine Tech, Cambridge MA.
- opts — to make a choice; choose (usually followed by for).
- opus — a musical composition.
On this page, we collect all 4-letter words starting with OP. It’s easy to find right word with a certain length. It is the easiest way to find 4-letter word that beginning with OP to use in Scrabble or Crossword puzzles.