Ocean vessels Ocean crossers Ocean crossers Ongoing quarrels Ongoing hostilities On the cold side Org. including Iran and Iraq Oil price-setting org. Oily group Oil-producers' gr. Oily group? Org. raided by Carlos the Jackal in 1975 Oil cartel Oil cartel Oil group Org. headquartered in Vienna Org. with crude interests Org. rejoined by two lapsed member nations in 2016 Oil bloc acronym Oil gp. Oil cartel Oil acronym Org. Indonesia left in 2008 Org. that Angola joined in 2007 Oil cartel acronym Oil gp. with 12 member nations Oil org. Oil gp. since 1960 Oil cartel since 1960 Oil pricing gp. Oil-producers' gp. Oil-rich gp. Org. of which Venezuela is a member Org. with lots of energy Oil cartel Oil gp. Oil nations' gp. Oil cartel initials Oil cartel (abbr.) Oil cartel based in Vienna Oil giant with HQ in Vienna Oil cartel acronym Oil nation's org. Outfielder's chances Outfielders' catches Outfield hits One of Sean Combs' stage names One of Sean Combs' stage names One of Sean Combs' stage names Ozone-level decrease Opening Ozone layer concern One of a golf course's eighteen Ozone layer concern One of 18 on a golf course Opening Ozone layer concern One of 18 in golf One of eighteen. One of 18. Opening. Ole swimmin' ___ One of an outdoor 18 Orifice Ochs or Silvers Olympian Mahre One of 18 on a golf course Ozone problem Oakleys or Ray-Bans Ozone layer problem Offensive lineman's creation One of 18 at St. Andrews Ozone problem Oxygen.com's target audience One of the Everly Brothers Oprah precursor "One More Night" singer Collins Ochs of folk rock One might put sweet jams on them Ochs of folk One of the Everly Brothers One of the Everly Brothers One of the Everly Brothers Orders Orders Orders from absolute rulers Orders from absolute rulers Oil cartel Oil grp. founded in Baghdad in 1960 Oil cartel Oil grp Oil cartel, briefly Oil companies finally accepting international sanctions On-the-job malady Overachiever's concern Overachiever's concern Obliterates. Outing. Obliterates Old Chevys Old Chevy models Old Chevy models Obsessive enthusiasm Opposite of -phobia Obsession Occupational hazard, often Overzealousness Obsession Overzealousness Obsession Obsession Opposite of "ennui" Outlandish bit of luck Obsession Orzo alternative Opening trattoria course Osso buco accompanier Outlandish bit of luck Outlandish bit of luck Obsession. Obedient Obedient Obedient Obedient Obsession Obedient Obsessive enthusiasm Ornamental. Ornate. Ornate Obsessive enthusiasm Obsession Obsession, as with a pop star Obsession Obsession, as with a pop star Overdone enthusiasm Obsession Obsession Over-enthusiasm Obsession Old-style weed whackers Obsession Old-style weed whackers Old-school carrot harvesters Off key Off-key Off-pitch Outright One might force you to retire Ones with combs Off-key, in a way Out of air, as a tire Off-key, in a way Opposite of sharp, in music Opposite of sharp, in music Out of tune ... or bubbles Ohio college that was a stop along the Underground Railroad Ohio college Ohio college town Ohio college or its town Ohio conservatory Ohio college with a music conservatory Ohio college Ohio college town Ohio college or its town Ohio conservatory Ohio college Ohio college town Ohio college Ohio college. Ohio college Ohio college that was the first in the U.S. to award degrees to women Ohio school that pioneered coeducation Ohio school Ohio college town Ohio college Ohio school that pioneered coeducation Ohio school Ohio college Ohio college Order to a film developer: Abbr. Ochs of folk Oracle of Punxsutawney One of the Everly Brothers One-time big-time daytime name "One More Night" singer Collins One of the Everly Brothers Ochs of folk One of the Everly Brothers One of the Everlys Oprah's doctor friend Occupational hazard Occupational hazard Overachiever's concern Oddly, satire eases tension Obtained. Offspring keeping dog locked up One of the Borgias One of the Borgias One of the Borgias One of the Borgias One of the Borgias One of the Borgias One of the Borgias Out of tune Off-key, in a way Off-pitch, in a way One way to fall Opposited of sharp Off-pitch Off-key Out of tune Off-key Out of fizz Out of air, as a tire Off key. Off key Off pitch Off-pitch One way to fall Off-key, in a way Out of fizz One way to be turned down Outright Opposite of sharp Objectivist Ayn One of 18 on a golf course One of eighteen Objectivist Ayn Ozone problem One of the front or back nine One of 18 One of the nine in 10-Down's clue One of the front nine One of 18 on a golf course Ozone problem Ozone layer problem One of 18 on a golf course One of three in many bowling balls Ozone problem One of the front or back nine One of 18 One of the nine in 10-Down's clue One of the front nine One with lots of stories in America? Of course, it's apparent in cholera Opening on golf course One can dig this dump One of 18 on a course One of 42 on a Connect Four board