OOO

surprise

Unexpected event causing astonishment

• realizationGrasping what's true
• understandingMental comprehension of something
• eurekaDiscovery triumph cry
• ahaExclamation of realization

discovery · insight · excitement · wonder · amazement · epiphany · astonishment · recognition

blank

Without marks or content

• slotNarrow slit for insertion
• variableProne to fluctuation
• fill-inTemporary substitute person
• substituteReplacement for another

redacted · censored · unknown · unnamed · unspecified · generic · template · form

grid

Framework of intersecting lines

• gameOrganized play or sport
• noughtsZeros, in British English
• crossesIntersecting line pairs
• winningAchieving victory

diagonal · row · column · square · draw · strategy · board · turn