Adamant pushes Attack up 10% and drops Sp. Attack by the same amount. Over in Emerald, top picks include Dragonite, Ho-Oh, Tyranitar, and more. If your Pokemon doesn't run special moves, there's no real downside. Synchronize is your best bet for Adamant in Emerald. Lead with a Synchronize Pokemon that already has it.

Adamant raises Attack by 10% and lowers Sp. Attack by 10%. Physical Sweepers and physical Wallbreakers that only use physical moves. 100 Pokemon competitively run this nature.
SHOWINGRegional53
#PokemonTierRoleAbility+Atk-SpASpe
1
Dragonite
Dragonite
DRAGONFLYING
SPhysical AttackerMultiscale
134+18
100-12
80
2
Ho-Oh
Ho-Oh
FIREFLYING
SPhysical TankRegenerator
130+18
110-13
90
3
Tyranitar
Tyranitar
ROCKDARK
APhysical AttackerSand Stream
134+18
95-12
61
4
Scizor
Scizor
BUGSTEEL
APhysical AttackerTechnician
130+18
55-8
65
5
Metagross
Metagross
STEELPSYCHIC
APhysical AttackerClearbody
135+18
95-12
70
6
Gyarados
Gyarados
WATERFLYING
APhysical AttackerIntimidate
125+17
60-8
81
7
Snorlax
Snorlax
NORMAL
ABulky SupportImmunity
110+16
65-9
30
8
Hitmontop
Hitmontop
FIGHTING
APhysical TankTechnician
95+14
35-6
70
9
Rhydon
Rhydon
GROUNDROCK
ABulky SupportLightningrod
130+18
45-7
40
10
Groudon
Groudon
GROUND
APhysical TankDrought
150+20
100-12
90
11
Arcanine
Arcanine
FIRE
APhysical TankIntimidate
110+16
100-12
95
12
Entei
Entei
FIRE
AUtilityInnerfocus
115+16
90-11
100
13
Regirock
Regirock
ROCK
APhysical TankClearbody
100+15
50-7
50
14
Jirachi
Jirachi
STEELPSYCHIC
APhysical AttackerSerenegrace
100+15
100-12
100
15
Donphan
Donphan
GROUND
APhysical TankSturdy
120+17
60-8
50
16
Flygon
Flygon
GROUNDDRAGON
APhysical AttackerLevitate
100+15
80-10
100
17
Scyther
Scyther
BUGFLYING
AUtilityTechnician
110+16
55-8
105
18
Sandslash
Sandslash
GROUND
APhysical AttackerSandrush
100+15
45-7
65
Dragonite
Dragonite
DRAGON FLYING
S
Role
Physical Attacker
Ability
Multiscale
+Atk
134 +18
Spe
80
Ho-Oh
Ho-Oh
FIRE FLYING
S
Role
Physical Tank
Ability
Regenerator
+Atk
130 +18
Spe
90
Tyranitar
Tyranitar
ROCK DARK
A
Role
Physical Attacker
Ability
Sand Stream
+Atk
134 +18
Spe
61
Scizor
Scizor
BUG STEEL
A
Role
Physical Attacker
Ability
Technician
+Atk
130 +18
Spe
65
Metagross
Metagross
STEEL PSYCHIC
A
Role
Physical Attacker
Ability
Clearbody
+Atk
135 +18
Spe
70
Gyarados
Gyarados
WATER FLYING
A
Role
Physical Attacker
Ability
Intimidate
+Atk
125 +17
Spe
81
Snorlax
Snorlax
NORMAL
A
Role
Bulky Support
Ability
Immunity
+Atk
110 +16
Spe
30
Hitmontop
Hitmontop
FIGHTING
A
Role
Physical Tank
Ability
Technician
+Atk
95 +14
Spe
70
Rhydon
Rhydon
GROUND ROCK
A
Role
Bulky Support
Ability
Lightningrod
+Atk
130 +18
Spe
40
Groudon
Groudon
GROUND
A
Role
Physical Tank
Ability
Drought
+Atk
150 +20
Spe
90
Arcanine
A
Role
Physical Tank
Ability
Intimidate
+Atk
110 +16
Spe
95
Entei
Entei
FIRE
A
Role
Utility
Ability
Innerfocus
+Atk
115 +16
Spe
100
Regirock
A
Role
Physical Tank
Ability
Clearbody
+Atk
100 +15
Spe
50
Jirachi
Jirachi
STEEL PSYCHIC
A
Role
Physical Attacker
Ability
Serenegrace
+Atk
100 +15
Spe
100
Donphan
Donphan
GROUND
A
Role
Physical Tank
Ability
Sturdy
+Atk
120 +17
Spe
50
Flygon
Flygon
GROUND DRAGON
A
Role
Physical Attacker
Ability
Levitate
+Atk
100 +15
Spe
100
Scyther
Scyther
BUG FLYING
A
Role
Utility
Ability
Technician
+Atk
110 +16
Spe
105
Sandslash
Sandslash
GROUND
A
Role
Physical Attacker
Ability
Sandrush
+Atk
100 +15
Spe
65
+10%Attack
-10%Sp. Attack
Flavor Preference
Likes Spicy, dislikes Dry
Competitive Role
Physical Sweepers and physical Wallbreakers that only use physical moves.
Adamant vs Jolly
Choose Adamant
+Attack / -Sp. Attack
  • Pokemon with priority moves (Extreme Speed, Aqua Jet, Sucker Punch)
  • Dragon Dance or other speed-boosting move users
  • Pokemon with base 130+ Speed that already outspeed threats
  • Choice Scarf holders that compensate for lower Speed
Choose Jolly
+Speed / -Sp. Attack
  • Pokemon in the base 80-110 Speed tier where one point decides matchups
  • Pure sweepers without priority or speed-boosting moves
  • Pokemon that need to outspeed a specific threat to function
How to Get
SynchronizeLead with a Adamant Pokemon that has the Synchronize ability. Wild Pokemon will match its nature. (Gen 3+)
BreedingGive the parent with Adamant nature an Everstone. The offspring will inherit it. (100% since Gen 5)
Nature MintUse an Adamant Mint to change stat effects to Adamant. The original nature name stays but stats change. (Gen 8+)
Other +Attack Natures
Brave (-Speed)Lonely (-Defense)Naughty (-Sp. Defense)
What does the Adamant nature do in Pokemon?
Adamant raises Attack by 10% and lowers Sp. Attack by 10%. At level 100 with full investment, that's roughly a 30-point swing on the boosted stat. Pokemon with Adamant nature prefer Spicy flavor and dislike Dry.
What are the best Adamant nature Pokemon?
Top Adamant users include Dragonite, Ho-Oh, Tyranitar, and Scizor. They benefit from the Attack boost because their main damage comes from that stat. The Sp. Attack drop doesn't hurt them since they don't rely on it.
Is Adamant a good nature for competitive Pokemon?
Adamant is a strong competitive nature. It's one of the most-used natures in competitive formats. The key is matching it to Pokemon that don't need Sp. Attack in their moveset.
How do I get an Adamant nature Pokemon?
Synchronize is the fastest method. Lead with a Pokemon that has Synchronize and Adamant nature, and wild encounters match it (Gen 3+). Breeding works too: give the Adamant parent an Everstone and all offspring inherit the nature. Nature Mints (Gen 8+) let you change the stat effect to Adamant without rebreeding.
Should I use Adamant or Jolly?
Adamant prioritizes power, while Jolly goes for speed. Pick Adamant when your Pokemon's role depends on the stat it boosts. Go with Jolly when speed matters more for your team.