Answer:

hap

Answer	Crossword Clue
HAP	Chance
HAP	Luck (arch.)
HAP	Luck, old-style

HAP	WWII general Arnold
HAP	Day of the NHL Hall of Fame
HAP	Accidental event
HAP	Occurrence
HAP	WWII General .. Arnold
HAP	General Arnold of WWII
HAP	"... by good .., yonder's my lord": "Timon of Athens"
HAP	Luck

HAP	Accident
HAP	Fortune
HAP	WWII Gen. ... Arnold
HAP	Chance, poetically
HAP	Occur, old-style
HAP	Hazard header
HAP	WWII General ... Arnold
HAP	Chance, formerly

HAP	General Arnold to friends
HAP	General Arnold, informally
HAP	Hazardly start?
HAP	Gen. Arnold's nickname
HAP	General Arnold's nickname
HAP	Nickname for General Arnold
HAP	Prefix for hazard
HAP	Five-star general Arnold

HAP	Colleague of Ike and Omar
HAP	General Arnold
HAP	One's luck
HAP	WWII general .. Arnold
HAP	Luck.
HAP	Chance.
HAP	Boss of our Air Force.
HAP	Gen. Arnold's sobriquet.

HAP	Gen. Arnold's nickname.
HAP	General Arnold.
HAP	Gen. Arnold.
HAP	Chance to fall.
HAP	Casual event.