Feint is learned by 45 species by level and 39 by egg

Effect, in PokéAPI's words

“Hits through Protect and Detect.”

Who learns it

73 species in all, 8 of 13 games shown

Scarlet and Violet: 60 species

Species	Method	Level
Raichu	Level up	1
Persian	Level up	1
Hitmonchan	Level up, Egg	1
Hitmontop	Level up, Egg	1
Skuntank	Level up	1
Lucario	Level up	1
Chesnaught	Level up	1
Fletchinder	Level up	1
Talonflame	Level up	1
Goodra	Level up	1
Cinderace	Level up	1
Stunky	Level up	3
Meowth	Level up	4
Riolu	Level up	4
Seviper	Level up	11
Tarountula	Level up	11
Spidops	Level up	11
Gallade	Level up	12
Iron Valiant	Level up	14
Meditite	Level up	15
Medicham	Level up	15
Pikachu	Level up	16
Breloom	Level up	19
Flamigo	Level up	21
Monferno	Level up	26
Infernape	Level up	26
Nymble	Level up	26
Hitmonlee	Level up, Egg	28
Lokix	Level up	28
Yanmega	Level up, Egg	38
Scyther	Egg
Electabuzz	Egg
Yanma	Egg
Gligar	Egg
Heracross	Egg
Sneasel	Egg
Skarmory	Egg
Houndour	Egg
Tyrogue	Egg
Elekid	Egg
Torchic	Egg
Combusken	Egg
Blaziken	Egg
Makuhita	Egg
Sableye	Egg
Trapinch	Egg
Vibrava	Egg
Flygon	Egg
Zangoose	Egg
Croagunk	Egg
Electivire	Egg
Gliscor	Egg
Blitzle	Egg
Zebstrika	Egg
Mienfoo	Egg
Mienshao	Egg
Hawlucha	Egg
Passimian	Egg
Tandemaus	Egg
Tinkatink	Egg

Brilliant Diamond and Shining Pearl: 40 species

Species	Method	Level
Raichu	Level up	1
Persian	Level up	1
Hitmonlee	Level up	1
Hitmonchan	Level up	1
Kabutops	Level up	1
Hitmontop	Level up	1
Flygon	Level up	1
Skuntank	Level up	1
Lucario	Level up	1
Stunky	Level up	3
Meowth	Level up	4
Riolu	Level up	4
Kecleon	Level up	10
Seviper	Level up	11
Gallade	Level up	12
Meditite	Level up	15
Medicham	Level up	15
Pikachu	Level up	16
Breloom	Level up	19
Monferno	Level up	26
Infernape	Level up	26
Yanmega	Level up	38
Farfetch’d	Egg
Scyther	Egg
Pinsir	Egg
Yanma	Egg
Gligar	Egg
Heracross	Egg
Sneasel	Egg
Skarmory	Egg
Houndour	Egg
Tyrogue	Egg
Elekid	Egg
Torchic	Egg
Makuhita	Egg
Sableye	Egg
Trapinch	Egg
Zangoose	Egg
Absol	Egg
Croagunk	Egg

Sword and Shield: 39 species

Species	Method	Level
Raichu	Level up	1
Persian	Level up	1
Hitmonlee	Level up	1
Hitmonchan	Level up	1
Kabutops	Level up	1
Hitmontop	Level up	1
Flygon	Level up	1
Skuntank	Level up	1
Lucario	Level up	1
Fletchinder	Level up	1
Talonflame	Level up	1
Goodra	Level up	1
Pheromosa	Level up	1
Marshadow	Level up	1
Cinderace	Level up	1
Grapploct	Level up	1
Stunky	Level up	3
Meowth	Level up	4
Riolu	Level up	4
Clobbopus	Level up	5
Gallade	Level up	12
Pikachu	Level up	16
Farfetch’d	Egg
Scyther	Egg
Pinsir	Egg
Heracross	Egg
Sneasel	Egg
Skarmory	Egg
Tyrogue	Egg
Elekid	Egg
Torchic	Egg
Sableye	Egg
Trapinch	Egg
Absol	Egg
Croagunk	Egg
Shelmet	Egg
Mienfoo	Egg
Hawlucha	Egg
Passimian	Egg

Let's Go Pikachu and Let's Go Eevee: 7 species

Species	Method	Level
Farfetch’d	Level up	1
Kabutops	Level up	1
Scyther	Level up	12
Meowth	Level up	15
Persian	Level up	15
Hitmonlee	Level up	15
Hitmonchan	Level up	15

Ultra Sun and Ultra Moon: 50 species

Species	Method	Level
Kabutops	Level up	1
Scizor	Level up	1, 61
Sharpedo	Level up	1
Absol	Level up	1
Chesnaught	Level up	1
Goodra	Level up	1
Heracross	Level up	7
Kecleon	Level up	10
Seviper	Level up	11
Riolu	Level up	11
Lucario	Level up	11
Marshadow	Level up	11
Meditite	Level up	15
Medicham	Level up	15
Stunky	Level up	15
Skuntank	Level up	15
Breloom	Level up	19
Pheromosa	Level up	19
Skarmory	Level up	20
Pikachu	Level up	21
Hitmonchan	Level up	21
Hitmontop	Level up	24
Hitmonlee	Level up	25
Monferno	Level up	26
Infernape	Level up	26
Trapinch	Level up	29
Yanmega	Level up	38
Gallade	Level up	40
Farfetch’d	Level up	43
Meowth	Level up	50
Scyther	Level up	61
Persian	Level up	65
Pinsir	Egg
Yanma	Egg
Gligar	Egg
Sneasel	Egg
Houndour	Egg
Tyrogue	Egg
Elekid	Egg
Torchic	Egg
Makuhita	Egg
Sableye	Egg
Zangoose	Egg
Croagunk	Egg
Blitzle	Egg
Shelmet	Egg
Mienfoo	Egg
Hawlucha	Egg
Bounsweet	Egg
Passimian	Egg

Sun and Moon: 48 species

Species	Method	Level
Kabutops	Level up	1
Scizor	Level up	1, 61
Sharpedo	Level up	1
Absol	Level up	1
Chesnaught	Level up	1
Goodra	Level up	1
Heracross	Level up	7
Kecleon	Level up	10
Seviper	Level up	11
Riolu	Level up	11
Lucario	Level up	11
Marshadow	Level up	11
Meditite	Level up	15
Medicham	Level up	15
Stunky	Level up	15
Skuntank	Level up	15
Breloom	Level up	19
Pheromosa	Level up	19
Skarmory	Level up	20
Pikachu	Level up	21
Hitmonchan	Level up	21
Hitmontop	Level up	24
Hitmonlee	Level up	25
Monferno	Level up	26
Infernape	Level up	26
Trapinch	Level up	29
Yanmega	Level up	38
Gallade	Level up	40
Farfetch’d	Level up	43
Meowth	Level up	50
Scyther	Level up	61
Persian	Level up	65
Pinsir	Egg
Yanma	Egg
Gligar	Egg
Sneasel	Egg
Houndour	Egg
Tyrogue	Egg
Elekid	Egg
Torchic	Egg
Makuhita	Egg
Sableye	Egg
Zangoose	Egg
Croagunk	Egg
Shelmet	Egg
Mienfoo	Egg
Bounsweet	Egg
Passimian	Egg

Omega Ruby and Alpha Sapphire: 43 species

Species	Method	Level
Kabutops	Level up	1
Scizor	Level up	1, 61
Sharpedo	Level up	1
Absol	Level up	1
Chesnaught	Level up	1
Goodra	Level up	1
Heracross	Level up	7
Kecleon	Level up	10
Riolu	Level up	11
Lucario	Level up	11
Meditite	Level up	15
Medicham	Level up	15
Stunky	Level up	18
Skuntank	Level up	18
Breloom	Level up	19
Skarmory	Level up	20
Pikachu	Level up	21
Hitmonchan	Level up	21
Hitmonlee	Level up	25
Monferno	Level up	26
Infernape	Level up	26
Trapinch	Level up	29
Hitmontop	Level up	33
Yanmega	Level up	38
Gallade	Level up	40
Farfetch’d	Level up	43
Meowth	Level up	50
Scyther	Level up	61
Persian	Level up	65
Pinsir	Egg
Yanma	Egg
Gligar	Egg
Sneasel	Egg
Houndour	Egg
Tyrogue	Egg
Elekid	Egg
Torchic	Egg
Makuhita	Egg
Sableye	Egg
Zangoose	Egg
Croagunk	Egg
Shelmet	Egg
Mienfoo	Egg

X and Y: 42 species

Species	Method	Level
Kabutops	Level up	1
Scizor	Level up	1, 61
Sharpedo	Level up	1
Trapinch	Level up	1, 61
Absol	Level up	1
Chesnaught	Level up	1
Goodra	Level up	1
Riolu	Level up	11
Lucario	Level up	11
Kecleon	Level up	14
Stunky	Level up	18
Skuntank	Level up	18
Skarmory	Level up	20
Hitmonchan	Level up	21
Meditite	Level up	22
Medicham	Level up	22
Hitmonlee	Level up	25
Monferno	Level up	26
Infernape	Level up	26
Hitmontop	Level up	33
Pikachu	Level up	34
Heracross	Level up	37
Yanmega	Level up	38
Farfetch’d	Level up	43
Gallade	Level up	45
Meowth	Level up	50
Scyther	Level up	61
Persian	Level up	65
Pinsir	Egg
Yanma	Egg
Gligar	Egg
Sneasel	Egg
Houndour	Egg
Tyrogue	Egg
Elekid	Egg
Torchic	Egg
Makuhita	Egg
Sableye	Egg
Zangoose	Egg
Croagunk	Egg
Shelmet	Egg
Mienfoo	Egg

Changed over time

One change since Generation IV

1. Through Gen IVPower 5030 from Black and White, Generation V