Question

casual 【CASUAL】Our long friendship began with a casual meeting at a Christmas party.我们长久的友谊，是从一次圣诞节宴会上偶然的相遇开始的。【重点词汇】casual adj. 偶然的 反: intentional

Accepted Answer

['kæʒuəl] 
casualwithout or seeming to be without plan or method; offhand
"Oh, no, are you kidding me? He's not my boyfriend, we're just in a casual relationship," means that our relationship lacks serious intent or commitment.
A synonym for casual is "everyday", meaning nothing special, unusual, serious, or eventful. If you're going to your friend's house for a dinner of burgers and beer, they might say, "It's just a casual night at home." Or, "Dress casual, we're just going to be serving ourselves." Don't run out to buy a special outfit, because what you're already wearing is probably just fine. It's what you wear every day, all the time; it's casual.

If you treat a person or a subject in a casual way, you're not paying close attention or treating them as special. That's not always a bad thing, by the way.
All forms of 'casual' will appear on average once every 374 pages.casualcasuallycasualness

Front	casual
Pron	['kæʒuəl]
Back	【CASUAL】 Our long friendship began with a casual meeting at a Christmas party. 我们长久的友谊，是从一次圣诞节宴会上偶然的相遇开始的。【重点词汇】 casual adj. 偶然的反: intentional
Vocab	casualwithout or seeming to be without plan or method; offhand "Oh, no, are you kidding me? He's not my boyfriend, we're just in a casual relationship," means that our relationship lacks serious intent or commitment. A synonym for casual is "everyday", meaning nothing special, unusual, serious, or eventful. If you're going to your friend's house for a dinner of burgers and beer, they might say, "It's just a casual night at home." Or, "Dress casual, we're just going to be serving ourselves." Don't run out to buy a special outfit, because what you're already wearing is probably just fine. It's what you wear every day, all the time; it's casual. If you treat a person or a subject in a casual way, you're not paying close attention or treating them as special. That's not always a bad thing, by the way. All forms of 'casual' will appear on average once every 374 pages. casual casually casualness

Casual Kæʒuəl Long Friendship Began Meeting Christmas Party