| Mother of Castor, Pollux, and Helen of Troy | 43 |
| Mother of divine twins, in Greek myth | 37 |
| Mother of Flopsy, Mopsy and Cottontail, e.g. | 44 |
| Mother of Gobo and Faline, in children's lit | 48 |
| Mother of Hector in the "Iliad" | 41 |
| Mother of Horus, in Egyptian myth | 33 |
| Mother of kings Richard I and John | 34 |
| Mother of Kourtney, Kim and Khloé | 36 |
| Mother of Kourtney, Kim, Khloe and Rob | 38 |
| Mother of Pearl, in an 1850 novel | 33 |
| Mother of Pegasus, in Greek myth | 32 |
| Mother of Richard the Lion-Hearted | 34 |
| Mother of Sean Preston and Sutton Pierce | 40 |
| Mother of Sorrow, in an 1891 novel | 34 |
| Mother of the stars and the winds | 33 |
| Mother of the winds, in Greek myth | 34 |
| Mother of three of Odysseus's sons | 38 |
| Mother of Track, Bristol, Willow, Piper and Trig | 48 |
| Mother on "The Family Guy" | 36 |
| Mother someone who's really awful? | 38 |
| Mother superior's counterpart | 33 |
| Mother Teresa's mother tongue | 33 |
| Mother Teresa's real first name | 35 |
| Mother who appeared on two covers of Time | 41 |
| Mother who never had a delivery? | 32 |
| Mother who was "all tears" | 36 |
| Mother who won a 1979 Peace Prize | 33 |
| Mother who won the Nobel Peace Prize | 36 |
| Mother ___ (1979 Nobel Peace Prize recipient) | 45 |
| Mother ___ (first American-born saint) | 38 |
| Mother ___ (first canonized U.S. citizen) | 41 |
| Mother ___ (Nobel Peace Prize winner) | 37 |
| Mother ___ (nun with a Nobel Prize) | 35 |
| Mother ___ (nursery rhyme source) | 33 |
| Mother ___, first U.S. canonized citizen | 40 |
| Mother ___, first U.S. citizen to be canonized | 46 |
| Mother ___, Nobelist for Peace: 1979 | 36 |
| Mother's "hermano" | 32 |
| Mother's brother, for example | 33 |
| Mother's cry at a dinner table | 34 |
| Mother's Day gift, sometimes | 32 |
| Mother's Day treats, perhaps | 32 |
| Mother's heifer razzed a nudnik? | 36 |
| Mother's sister in Málaga | 32 |
| Mother's urging at the dinner table | 39 |
| Mother, colloquially, in Britain | 32 |
| Mother, on the second Sunday in May | 35 |
| Mother-of-pearl "mother" | 34 |
| Motherless calf, in the Old West | 32 |
| Motherly advice after a tough bronco ride? | 42 |
| Mothers of Invention rocker Frank | 33 |
| Mothers who hum to their newborns | 33 |
| Mothers' and sisters' places | 36 |
| Moths with colorful eyespots on their hind wings | 48 |
| Motion made by fans in a stadium | 32 |
| Motion of the ocean result, for some | 36 |
| Motion of the ocean result, sometimes | 37 |
| Motion picture industry pioneer Marcus | 38 |
| Motion picture or motion-picture theater | 40 |
| Motion that might occur during headbanging? | 43 |
| Motion to secede endorsed for a vote? | 37 |
| Motion while saying "Good dog!" | 41 |
| Motion-controlled gaming console | 32 |
| Motion-picture theater, to a Londoner | 37 |
| Motivated entrepreneur's motto | 34 |
| Motivation for rubbing one's temples | 40 |
| Motivation for the earth's rotation? | 40 |
| Motivation to keep a doctor's appointment | 45 |
| Motivational words for a boss at layoff time? | 45 |
| Motivations for some bungee jumps | 33 |
| Motley Crue "Generation ___" | 38 |
| Motley Crue "Looks ___ Kill" | 38 |
| Motley Crue "Too ___ for Love" | 40 |
| Motley Crue "___ (Just Go Away)" | 42 |
| Motley Crue "___ Ol' Situation" | 45 |
| Motley Crue's is "Sweet" | 38 |
| Motor company headquartered in Hiroshima | 40 |
| Motor Trend's 1968 Car of the Year | 38 |
| Motor Trend's 1968 Cars of the Year | 39 |
| Motor Trend's 1971 Car of the Year | 38 |
| Motorbike fill-up, perhaps: Abbr. | 33 |
| Motorcycle club for astronomers? | 32 |
| Motorcycle club for dairy farmers? | 34 |
| Motorcycle club for Marilyn Monroe fans? | 40 |
| Motorcycle club for martial artists? | 36 |
| Motorcycle designed for acrobatic maneuvers | 43 |
| Motorcycle engine units, briefly | 32 |
| Motorcycle-daredevil's apparatus | 36 |
| Motorcyclist's spot for shelter | 35 |
| Motorhead "___ Of Spades" | 35 |
| Motorhead frontman famous for his mutton chops | 46 |
| Motorhead: "___ of Spades" | 36 |
| Motorist who uses more than one lane | 36 |
| Motorist's "downer" | 33 |
| Motorist's "Move it!" | 35 |
| Motorist's concern, for short | 33 |
| Motorist's day's-end quest | 34 |
| Motorist's device, a bit mislabeled | 39 |
| Motorist's disability, a bit misstated | 42 |
| Motorist's insurance, a bit misrepresented | 46 |