| Only a bit | 10 |
| Only 20th-century prez without a coll. degree | 45 |
| Only 20th-century president whose three distinct initials are in alphabetical order | 83 |
| Only "Winnie the Pooh" human | 38 |
| Only "Garfield" character who doesn't use a speech bubble | 71 |
| Only | 4 |
| Onlookers | 9 |
| Onlooker | 8 |
| ONLINE? | 7 |
| Online-only publication | 23 |
| Online __ print | 15 |
| Online zine | 11 |
| Online yuk | 10 |
| Online world where people live and pay taxes in 2010, according to Tom Clancy's "Net Force" series | 112 |
| Online workshop | 15 |
| Online weekly, e.g. | 19 |
| Online voice calling service | 28 |
| Online VIPs | 11 |
| Online VIP | 10 |
| Online view intro | 17 |
| Online video source | 19 |
| Online video site | 17 |
| Online video of a 1960s president talking to aliens? | 52 |
| Online video equipment | 22 |
| Online user's self-image | 28 |
| Online used vehicle dealer | 26 |
| Online urban guide | 18 |
| Online update format, for short | 31 |
| Online university suffix | 24 |
| Online university staff? | 24 |
| Online university extension | 27 |
| Online TV site | 14 |
| Online troublemaker | 19 |
| Online travel reservation | 25 |
| Online tracking devices | 23 |
| Online tip jar (just sayin') | 32 |
| Online time stamp | 17 |
| Online threats | 14 |
| Online technical news source | 28 |
| Online tech-news source | 23 |
| Online tech news source | 23 |
| Online tech news site | 21 |
| Online tech news resource | 25 |
| Online talk site | 16 |
| Online talk | 11 |
| Online surfers, e.g. | 20 |
| Online suffix with Net | 22 |
| Online subscription inits. | 26 |
| Online stores, collectively | 27 |
| Online store with the slogan "Childhood Dreams Delivered" | 67 |
| Online store option | 19 |
| Online store offering | 21 |
| Online store | 12 |
| Online stock site | 17 |
| Online stock picker's option | 32 |
| Online status update limited to 140 characters | 46 |
| Online starting point | 21 |
| Online stand-in | 15 |
| Online spender's convenience | 32 |
| Online source for TV shows | 26 |
| Online software come-on | 23 |
| Online social session | 21 |
| Online social appointment | 25 |
| Online slang | 12 |
| Online skirmish? | 16 |
| Online site where users may write and edit texts | 48 |
| Online site | 11 |
| Online singles service available in English, French and Hebrew | 62 |
| Online sidebar headings | 23 |
| Online shows | 12 |
| Online shopping venue | 21 |
| Online shopping outlay | 22 |
| Online shopping mecca | 21 |
| Online shopping icon | 20 |
| Online shopping center | 22 |
| Online shoppers might use it | 28 |
| Online shoppers might spend it | 30 |
| Online shopper's expenditure | 32 |
| Online shopper's basket | 27 |
| Online shopkeeper | 17 |
| Online service with a butterfly logo | 36 |
| Online seller's site | 24 |
| Online self-image | 17 |
| Online seer? | 12 |
| Online scam | 11 |
| Online sales | 12 |
| Online room | 11 |
| Online review site | 18 |
| Online revenue sources | 22 |
| Online return returner | 22 |
| Online retailer, perhaps | 24 |
| Online resource | 15 |
| Online reservation | 18 |
| Online request to come to a party | 33 |
| Online reminders | 16 |
| Online reminder | 15 |
| Online registration creations | 29 |
| Online reference source | 23 |
| Online reference for all things "Star Wars" | 53 |
| Online recruiting site | 22 |