[ควรปิด] <subject> should close

[ควรพูด] <subject> should speak

[ควรไม่ดื่ม] <subject> shouldn't drink

[ควรไม่ยิ้ม] <subject> shouldn't smile

[ควรเรียน] should study

[Thai transcription of the foreign loanword] quartz; quartz, one of the most common minerals, silicon dioxide, SiO2, having many varieties that differ in color, luster, etc., and occurring either in masses (as agate, bloodstone, chalcedony, jasper, etc.) or in crystals (as rock crystal, amethyst, citrine, etc.): the chief constituent of sand and sandstone, and an important constituent of many other rocks. It is piezoelectric and used to control the frequencies of radio transmitters.

to seize the opportunity; take advantage of a good opportunity

[ความกระตือรือร้น] enthusiasm

[ความเก่า] antiquity; age; oldness

[ความเข้าใจ] understanding; comprehension

[ความคุ้มครอง] [general] protection

[ความจงใจ] intention; aim; purpose

[ความชัน] a slope; an incline

low blood pressure; hypotension

[ความถ่อมตน] modesty; humility

[ความนิ่ง] stillness; quietude; peace; serenity

[ความป่าเถื่อน] brutality; savagry; barbarism

[ความผันผวน] fluctuation; change

[ความมั่งคั่ง] wealth; affluency

wavelength

[ความเร็ว] speed; velocity

[ความว้าวุ่นใจ] anxiety; confusion; agitation; stress

intimate relations; promiscuity

[ความห่วงใย] worry; concern; anxiety

[ความอาฆาต] vengeange; revenge

the mouth of an earthen pot

[Thai transcription of foreign loanword] to confirm (as in an airline ticket or hotel room)

[Thai transcription of the foreign loanword] columnist

choke lever (for a motorcycle, e.g.)

[ค่าชดเชย] (funds as) compensation for (losses)