Moon writer
Moon rider
Window; windows
26 windows
26 widows
Blind
Bold
Boiled
Wandering in wonder
Wondering in wander
West
East
26 days
Wiser
Wizarding whistles
Melting hums
Sweltering breaths
Blustering bustling
Bridging
Hand in hand
Hand over hand
The 25th letter is 'Y'