Delete to word start

`Ctrl` + `Backspace`

All hotkeys for Jetbrains CLion (Windows)

Editing Shortcuts Basic code completion (the name of any class, method or variable)	`Ctrl` + `Spacebar`
Editing Shortcuts Smart code completion (filters the list of methods and variables by expected type)	`Ctrl` + `Shift` + `Spacebar`
Editing Shortcuts Complete statement	`Ctrl` + `Shift` + `Enter`
Editing Shortcuts Parameter info (within method call arguments)	`Ctrl` + `P`
Editing Shortcuts Quick documentation lookup	`Ctrl` + `Q`
Editing Shortcuts Brief Info	`Ctrl` + `Mouse over code`
Editing Shortcuts Show descriptions of error or warning at caret	`Ctrl` + `F1`
Editing Shortcuts Generate code... (Getters, Setters, Constructors, hashCode/equals, toString)	`Alt` + `Insert`
Editing Shortcuts Override methods	`Ctrl` + `O`
Editing Shortcuts Implement methods	`Ctrl` + `I`
Editing Shortcuts Surround with… (if..else, try..catch, for, synchronized, etc.)	`Ctrl` + `Alt` + `T`
Editing Shortcuts Comment/uncomment with line comment	`Ctrl` + `/`
Editing Shortcuts Comment/uncomment with block comment	`Ctrl` + `Shift` + `/`
Editing Shortcuts Select successively increasing code blocks	`Ctrl` + `W`
Editing Shortcuts Decrease current selection to previous state	`Ctrl` + `Shift` + `W`
Editing Shortcuts Show Intension actions and QuickFixes	`Alt` + `Q`
Editing Shortcuts Reformat code	`Ctrl` + `Alt` + `L`
Editing Shortcuts Optimize imports	`Ctrl` + `Alt` + `O`
Editing Shortcuts Auto-indent line(s)	`Ctrl` + `Alt` + `I`
Editing Shortcuts Indent/unindent selected lines	`Tab` / `Shift` + `Tab`
Editing Shortcuts Cut current line or selected block to clipboard	`Ctrl` + `X`
Editing Shortcuts Copy current line or selected block to clipboard	`Ctrl` + `C`
Editing Shortcuts Paste from clipboard	`Ctrl` + `V`
Editing Shortcuts Paste from recent buffers...	`Ctrl` + `Shift` + `V`
Editing Shortcuts Duplicate current line or selected block	`Ctrl` + `D`
Editing Shortcuts Delete line at caret	`Ctrl` + `Y`
Editing Shortcuts Smart line join	`Ctrl` + `Shift` + `J`
Editing Shortcuts Smart line split	`Ctrl` + `Enter`
Editing Shortcuts Start new line	`Shift` + `Enter`
Editing Shortcuts Toggle case for word at caret or selected block	`Ctrl` + `Shift` + `U`
Editing Shortcuts Select till code block end/start	`Ctrl` + `Shift` + `]` / `[`
Editing Shortcuts Delete to word end	`Ctrl` + `Delete`
Editing Shortcuts Delete to word start	`Ctrl` + `Backspace`
Editing Shortcuts Expand/collapse code block	`Ctrl` + NumPad `+` / `-`
Editing Shortcuts Expand all / collapse all	`Ctrl` + `Alt` + NumPad `+` / `-`
Editing Shortcuts Close active editor tab	`Ctrl` + `F4`
Editing Shortcuts Place caret in Multiple Location	`Alt` + `Shift` + `Click`
Editing Shortcuts Restore Single Caret Mode	`Esc`
Editing Shortcuts Add/Delete Next Occurance of Current Word to Selection	`Alt` + `G` / `Alt` + `Shift` + `G`
Find and Replace Search everywhere	`Double Shift`
Find and Replace Find	`Ctrl` + `F`
Find and Replace Find next/Find previous	`F3` / `Shift` + `F3`
Find and Replace Replace	`Ctrl` + `R`
Find and Replace Find in path	`Ctrl` + `Shift` + `F`
Find and Replace Replace in path	`Ctrl` + `Shift` + `R`
Compile and Run Build Project	`Ctrl` + `F9`
Compile and Run Select configuration and run	`Alt` + `Shift` + `F10`
Compile and Run Select configuration and debug	`Alt` + `Shift` + `F9`
Compile and Run Run	`Shift` + `F10`
Compile and Run Debug	`Shift` + `F9`
Debugging Step over	`F8`
Debugging Step into	`F7`
Debugging Step out	`Shift` + `F8`
Debugging Run to cursor	`Alt` + `F9`
Debugging Evaluate expression	`Alt` + `F8`
Debugging Resume program	`F9`
Debugging Toggle breakpoint	`Ctrl` + `F8`
Debugging View breakpoints	`Ctrl` + `Shift` + `F8`
Live Templates Surround with Live Template	`Ctrl` + `Alt` + `J`
Live Templates Insert Live Template	`Ctrl` + `J`
Live Templates Indexed for( ; ; ) loop	`for`
Live Templates Iterate range(C++11)	`iter`
Live Templates Iterate using Begin/End Member Functions	`itit`
Live Templates In CMake include directions with Boost	`incboost`
Live Templates In CMake create New Function Definitor	`function`
Navigation Shortcuts Go to class	`Ctrl` + `N`
Navigation Shortcuts Go to file	`Ctrl` + `Shift` + `N`
Navigation Shortcuts Go to symbol	`Ctrl` + `Alt` + `Shift` + `N`
Navigation Shortcuts Go to next/previous editor tab	`Alt` + `Right Arrow` / `Left Arrow`
Navigation Shortcuts Go back to previous tool window	`F12`
Navigation Shortcuts Go to editor (from tool window)	`Esc`
Navigation Shortcuts Hide active or last active window	`Shift` + `Esc`
Navigation Shortcuts Close active run/messages/find/... tab	`Ctrl` + `Shift` + `F4`
Navigation Shortcuts Go to line	`Ctrl` + `G`
Navigation Shortcuts Recent files popup	`Ctrl` + `E`
Navigation Shortcuts Navigate backward / navigate forward	`Ctrl` + `Alt` + `Left Arrow` / `Right Arrow`
Navigation Shortcuts Navigate to last edit location	`Ctrl` + `Shift` + `Backspace`
Navigation Shortcuts Select current file or symbol in any view	`Alt` + `F1`
Navigation Shortcuts Go to declaration	`Ctrl` + `B`
Navigation Shortcuts Go to implementation(s)	`Ctrl` + `Alt` + `B`
Navigation Shortcuts Go to related Symbol(Header/Source File)	`Ctrl` + `Alt` + `Home`
Navigation Shortcuts Open quick definition lookup	`Ctrl` + `Shift` + `I`
Navigation Shortcuts Go to type declaration	`Ctrl` + `Shift` + `B`
Navigation Shortcuts Go to super-method/super-class	`Ctrl` + `U`
Navigation Shortcuts Go to previous/next method	`Alt` + `Up Arrow` / `Down Arrow`
Navigation Shortcuts Move to code block end / move to code start	`Ctrl` + `]` / `[`
Navigation Shortcuts File structure popup	`Ctrl` + `F12`
Navigation Shortcuts Type hierarchy	`Ctrl` + `H`
Navigation Shortcuts Call hierarchy	`Ctrl` + `Alt` + `H`
Navigation Shortcuts Next/previous highlighted error	`F2` / `Shift` + `F2`
Navigation Shortcuts Toggle bookmark	`F11`
Navigation Shortcuts Toggle bookmark with mnemonic	`Ctrl` + `F11`
Navigation Shortcuts Go to numbered bookmark	`Ctrl` + `0` ... `9`
Navigation Shortcuts Show bookmarks	`Shift` + `F11`
General Open corresponding tool window	`Alt` + `0` ... `9`
General Inspect current file with current profile	`Alt` + `Shift` + `I`
General Quick switch current scheme	`Ctrl` + `
General Edit Application Settings	`Ctrl` + `Alt` + `S`
General Hide All Tool Windows	`Ctrl` + `Shift` + `F12`
General Add to Favourites	`Alt` + `Shift` + `F`
Usage Search Find Usage	`Alt` + `F7`
Usage Search Find Usages in File	`Ctrl` + `F7`
Usage Search Highlight Usages in File	`Ctrl` + `Shift` + `F7`
Usage Search Show Usages	`Ctrl` + `Alt` + `F7`
VCS/Local History Commit Project to VCS	`Ctrl` + `K`
VCS/Local History Update Project from VCS	`Ctrl` + `T`
VCS/Local History View Recent Changes	`Alt` + `Shift` + `C`
VCS/Local History VCS Quick Popup	`Alt` + `
Refactoring Refactor This	`Ctrl` + `Alt` + `Shift` + `T`
Refactoring Copy	`F5`
Refactoring Move	`F6`
Refactoring safe Delete	`Alt` + `Delete`
Refactoring Rename	`Shift` + `F6`
Refactoring Change Signature	`Ctrl` + `F6`
Refactoring Extract Function	`Ctrl` + `Alt` + `M`
Refactoring Inline	`Ctrl` + `Alt` + `N`
Refactoring Introduce parameter	`Ctrl` + `Alt` + `P`
Refactoring Introduce Variable	`Ctrl` + `Alt` + `V`
Refactoring Introduce Constant	`Ctrl` + `Alt` + `C`
Refactoring Introduce Define	`Ctrl` + `Alt` + `D`