| What NASA specializes in | 24 |
| What national banks oversee | 27 |
| What natural gas lacks | 22 |
| What navel oranges lack | 23 |
| What nervous Nellies are on | 27 |
| What Ness put people under | 26 |
| What new hotshot does to bar | 28 |
| What new moms of twins need? | 28 |
| What newbies read on-line | 25 |
| What newbies read online | 24 |
| What NHL shootouts resolve | 26 |
| What nitrous oxide produces | 27 |
| What Nixon denied being | 23 |
| What Nixon said he was not | 26 |
| What no band wants from fans | 28 |
| What no Mensa member has | 24 |
| What no-show musician went | 26 |
| What Noah built the Ark for | 27 |
| What Noah Webster said ...? | 27 |
| What nobody doesn't like | 28 |
| What nobody likes to pay | 24 |
| What not to call Bryn Mawr | 26 |
| What not to get from the boss | 29 |
| What not to rock or miss | 24 |
| What nouns and verbs must do | 28 |
| What novices don't know | 27 |
| What NOW wants women to be | 26 |
| What nudity may lead to | 23 |
| What O'Neill wields | 23 |
| What Obama is called, often | 27 |
| What ochlophobists fear | 23 |
| What often follows you | 22 |
| What often grows attached? | 26 |
| What oil cleanups clean up | 26 |
| What oil helps dissolve | 23 |
| What old enemies may do | 23 |
| What Old Faithful blows off | 27 |
| What olden days were of | 23 |
| What olfactometers measure | 26 |
| What Oliver asked for more of | 29 |
| What Oliver Twist wanted | 24 |
| What Olympic bobsleds do | 24 |
| What one becomes in Madrid | 26 |
| What one carries for parries | 28 |
| What one does to a joint? | 25 |
| What one gets reading poetry? | 29 |
| What one has at the top | 23 |
| What one in control has | 23 |
| What one in need may need | 25 |
| What one is done with? | 22 |
| What one little pig had | 23 |
| What one little piggie had | 26 |
| What one little piggy had | 25 |
| What one may be taken for? | 26 |
| What one may do to a joint? | 27 |
| What one may slip into | 22 |
| What one might beg to do | 24 |
| What one might sink to | 22 |
| What one might sneak out on | 27 |
| What one might stop to do? | 26 |
| What one might swim in | 22 |
| What one needs to get by | 24 |
| What one plays pool with? | 25 |
| What one star may mean | 22 |
| What one takes to advance | 25 |
| What one undecillion contains | 29 |
| What one with the jitters has | 29 |
| What oneirocritics give | 23 |
| What oneirocritics interpret | 28 |
| What online chatters may do | 27 |
| What opening band is on? | 24 |
| What opens and closes safes? | 28 |
| What opinions often do | 22 |
| What opium addicts hit | 22 |
| What opposites do, they say | 27 |
| What Oriental is to relation | 28 |
| What Oscar Madison wasn't | 29 |
| What oscillating fans do | 24 |
| What osmics is the study of | 27 |
| What Othello did to Desdemona | 29 |
| What otitis media affects | 25 |
| What otoscopes examine | 22 |
| What our secret should be | 25 |
| What outrageous bands test | 26 |
| What overhead contributes to | 28 |
| What oversleepers might miss? | 29 |
| What oviparous creatures do | 27 |
| What oz. may add up to | 22 |
| What P.O.'s handle | 22 |
| What pampas don't have | 26 |
| What pandemonium lacks | 22 |
| What Pandora let loose | 22 |
| What Pandora unleashed | 22 |
| What pants on fire have? | 24 |
| What paper profits aren't | 29 |
| What parallels parallel | 23 |
| What Parisians snack on? | 24 |
| What passwords provide | 22 |
| What patients need, for short | 29 |
| What Patton often sat in | 24 |