Avoiding the Number 4 in East Asian Cultures

Why the Number 4 Is Feared Across Asia: The Superstition Behind Tetraphobia

Details

In many East Asian cultures, the number 4 is considered so unlucky that it is actively avoided in everyday life. The fear is not symbolic—it leads to skipped floor numbers in buildings, altered hospital room designations, and reduced sales of phone numbers or products containing the digit. This aversion is especially strong in contexts involving health, longevity, or major life milestones, where the number’s ominous connotation could invite bad luck or even death.

This fear is known as tetraphobia, derived from the Greek tetra (four) and phobia (fear). The superstition is deeply embedded in both traditional customs and modern business practices, shaping decisions from real estate development to gift-giving etiquette.

Historical Context

The superstition is primarily linguistic in origin:

In Mandarin Chinese, the word for four (sì) is almost indistinguishable in tone and pronunciation from the word for death (sǐ).
In Japanese, “four” (shi) is a homophone for “death” (shi).
In Korean, both “four” and “death” are pronounced sa.
Similar phonetic parallels exist in Vietnamese and other East Asian languages.

This phonetic overlap created a cultural aversion over centuries, especially in medical and ceremonial contexts where invoking “death” through speech or numbers was considered dangerous. The fear became institutionalized in traditional customs, religious practices, and eventually, modern architecture and commerce.

Modern Relevance

Tetraphobia continues to shape daily life across East Asia:

Buildings in countries like China, Japan, and Korea often omit the 4th floor entirely or label it “3A” or “F” to avoid the number. In high-rise apartments, floor numbers like 14, 24, and 44 are frequently skipped as well.
Hospitals are particularly cautious, often omitting room numbers that contain 4, especially in intensive care or maternity wards.
Phone numbers with multiple 4s are sold at lower prices or avoided altogether in personal and corporate settings.
Tech and consumer product companies adjust their branding—Samsung, for example, avoided the “Galaxy S4” name in some regions, using “S IV” or skipping the number in marketing.
Gift-giving customs warn against presenting items in sets of four, which may be interpreted as symbolically offering death.

This superstition also affects global businesses entering East Asian markets, who often adapt their strategies to respect local sensitivities around the number.

Sources

Yau, O.H.M. (1988). “Chinese Cultural Values: Their Dimensions and Marketing Implications.” European Journal of Marketing, 22(5), 44–57.
Kramer, T., & Block, L. (2008). “Conscious and Nonconscious Components of Superstitious Beliefs in Judgment and Decision Making.” Journal of Consumer Research, 34(6), 783–793.