40
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- 1 40
This is the basic numeral for 40, used for quantities, ages, prices, times, numbers, and other everyday contexts.
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หกโมงสี่สิบนาที hòk mooŋ sìi sìp naathii 6:40 หกโมงสี่สิบนาที details
Learning notes
Explanation
สี่สิบ is formed from สี่ “four” and สิบ “ten,” literally representing four tens. When counting objects, Thai commonly uses the order “noun + number + classifier.” For example, หนังสือสี่สิบเล่ม means “forty books,” with เล่ม as the classifier. It can be extended to form numbers such as สี่สิบเอ็ด “41” and สี่สิบสอง “42.” In 41, the final one is normally expressed as เอ็ด rather than หนึ่ง. The word is neutral and standard in both speech and writing.
Usage
It is used for quantities, ages, prices, minutes in a time expression, and numbers such as addresses or room numbers. It works in virtually any everyday context requiring the number 40.
Caution
Do not confuse it with สิบสี่ “14.” สี่สิบ represents four tens, while สิบสี่ represents ten plus four. When counting objects, the number is also normally followed by an appropriate classifier.