Previous Ability

`Mouse wheel down`

All hotkeys for Warframe

General Take Screenshot	`F6`
General Menus	`Esc`
General Use Cipher	`Y`
Movement Move Up (Archwing)	`Space`
Movement Move Forward	`W`
Movement Move Left	`A`
Movement Move Backward	`S`
Movement Move Right	`D`
Movement Move	`← ↑ → ↓`
Movement Hold to Crouch	`Ctrl`
Movement Toggle Crouch	`V`
Movement Sprint/Roll	`↑ Shift`
Weapons & fight (if equipped) Melee Channel	`Mouse left click`
Weapons & fight (if equipped) Melee Block	`Mouse right click`
Weapons & fight Secondary Fire	`Mouse middle click`
Weapons & fight Reload	`R`
Weapons & fight Use	`X`
Weapons & fight Melee Attack	`E`
Weapons & fight Switch Weapon	`F`
Weapons & fight Chat	`T`
Gear wheel (in Gear wheel) Select Sub Gear 0	`1`
Gear wheel (in Gear wheel) Select Sub Gear 1	`2`
Gear wheel (in Gear wheel) Select Sub Gear 2	`3`
Weapons & fight Ability D	`4`
Weapons & fight Focus and Transference	`5`
Weapons & fight Ability A	`Num 1`
Weapons & fight Ability B	`Num 2`
Weapons & fight Ability C	`Num 3`
Weapons & fight Ability D	`Num 4`
Weapons & fight Focus and Transference	`Num 5`
Weapons & fight Next Ability	`Mouse wheel up`
Weapons & fight Previous Ability	`Mouse wheel down`
Gear wheel Gear Wheel	`Q`
Camera Place Marker/Captura Camera	`G`
Camera Reverse Camera	`H`
Camera Spectate Prev. Player	`O`
Misc Show Player List	`Z`
Misc Push to Talk	`C`
Misc Inspect	`I`
Misc Show Level Map	`M`
Misc View Mission Progress	`P`
Misc Quick Progress View	`⭾ Tab`