| Nature-trail travelers | 22 |
| Nature's icy coating | 24 |
| Nature's burn remedy | 24 |
| Nature's building block | 27 |
| Nature's alarm clock | 24 |
| Nature writer Edwin Way ___ | 27 |
| Nature worshiper, of a sort | 27 |
| Nature photographer Adams | 25 |
| Nature lovers, e.g. (Var.) | 26 |
| Nature lovers of a sort | 23 |
| Nature lover's prefix | 25 |
| Nature goddess of the Nile | 26 |
| Naturally-lit living space | 26 |
| Naturally lit courtyard | 23 |
| Naturally inclined (to) | 23 |
| Naturally disposed toward | 25 |
| Naturally curly hairdo | 22 |
| Naturally brewed beverage | 25 |
| Naturalist/TV host Steve | 24 |
| Naturalist's subj. | 22 |
| Naturalist Roger ___ Peterson | 29 |
| Naturalist John's family | 28 |
| Naturalist John et al. | 22 |
| Naturalist Fossey et al. | 24 |
| Naturalist Edwin Way ___ | 24 |
| Natural-gas components | 22 |
| Natural, in '70s lingo | 26 |
| Natural viewing height | 22 |
| Natural unpredictability | 24 |
| Natural tunnel creator | 22 |
| Natural topical treatment | 25 |
| Natural timekeeper, of a sort | 29 |
| Natural soil aggregate | 22 |
| Natural smoke detector | 22 |
| Natural skyline former | 22 |
| Natural skin treatment | 22 |
| Natural Skin Science company | 28 |
| Natural shampoo additive | 24 |
| Natural selection theorist | 26 |
| Natural selection experiment | 28 |
| Natural selection affects it | 28 |
| Natural selection adherent | 26 |
| Natural resources dept. | 23 |
| Natural resource source | 23 |
| Natural religion advocacy | 25 |
| Natural religion adherent | 25 |
| Natural power generator | 23 |
| Natural origin of life | 22 |
| Natural or renewable supply | 27 |
| Natural or noble follower | 25 |
| Natural necklace components | 27 |
| Natural milk container | 22 |
| Natural life support system | 27 |
| Natural life of a region | 24 |
| Natural leader, in astrology | 28 |
| Natural history museum prefix | 29 |
| Natural history museum piece | 28 |
| Natural History Mus. display | 28 |
| Natural hair conditioner | 24 |
| Natural geological trap | 23 |
| Natural gas ingredient | 22 |
| Natural gas constituent | 23 |
| Natural gas components | 22 |
| Natural gait of a horse | 23 |
| Natural food additives | 22 |
| Natural fluid containers | 24 |
| Natural flood protection | 24 |
| Natural fertilizer source | 25 |
| Natural effortlessness | 22 |
| Natural continental border | 26 |
| Natural cologne additive | 24 |
| Natural childbirth method | 25 |
| Natural burn medication | 23 |
| Natural Bridges locale | 22 |
| Natural bath body scrub | 23 |
| Natural bath accessories | 24 |
| Natural athlete, supposedly | 27 |
| Natural antidepressant | 22 |
| Natural air conditioner | 23 |
| Natty Bumppo's sobriquet | 28 |
| Natty Bumppo's quarry | 25 |
| Natty Bumppo's creator | 26 |
| Natty Bumppo conveyance | 23 |
| Nattily dressed ad figure | 25 |
| Nattering nag of old TV | 23 |
| NATO's late cousin | 22 |
| NATO's extinct cousin | 25 |
| NATO's defunct cousin | 25 |
| NATO ratification signer | 24 |
| NATO member since 4/1/2009 | 26 |
| NATO member since 2009 | 22 |
| NATO member since 2004 | 22 |
| NATO member since 1999: Abbr. | 29 |
| NATO member since 1982 | 22 |
| NATO joiner of '04 | 22 |
| NATO headquarters site | 22 |
| NATO alphabet "E" | 27 |
| Natl. Safe Toys and Gifts Mo. | 29 |
| Natl. Novel Writing mo. | 23 |
| Natl. Guard counterpart | 23 |