喜
JLPT HSK 1

xǐ
From top: scholar 士, beans 豆, mouth 口. (This character has also been simplified to 吉)
A scholar with beans in his mouth is happy.

	结
JLPT HSK 3

jié, jiē
Left: thread 纟/糸, right: luck/joy 吉 (simplificaton of 喜, where the scholar 士 has beans 豆 in the mouth 口 and is happy.)
Threads of joy tie us.

	调
JLPT HSK 3

diào, tiáo
Left: word 讠/言 (sound waves out of a mouth 口), right: circumference 周 (A framed 冂 luck 吉, sets its circumference) [joy 吉 = simplification of happy 喜, where the scholar 士 has beans 豆 in his mouth 口 and is happy.]
Words in their circumference are a: tone/tune.

	周
JLPT HSK 3

zhōu
Outside: frame 冂, inside: luck 吉 (simplification of 喜, where the scholar 士 has beans 豆 in the mouth 口 and is happy)
A framed luck, sets its circumference.

	桔
JLPT HSK 5

jié, jú
Left: tree 木, right: happy 吉 (simplification of 喜, where the scholar 士 has beans 豆 in the mouth 口 and is happy.)
The tree that makes you happy is the tangerine.

	洁
JLPT HSK 6

jié
Left: water 氵, right: happy 吉 (simplification of 喜, where the scholar 士 has beans 豆 in the mouth 口 and is happy.)
The water makes you happy, if it is clean.

	吉
JLPT HSK 6

jí
Top: scholar 士, below: mouth 口 (This character is a simplification of happy 喜, where the scholar 士 has beans 豆 in the mouth 口 and is happy)
The scholar's mouth wishes good luck.

	诘
JLPT no HSK

jié
Left: word 讠(=言 sound waves out of a mouth 口), right: happy 吉 (simplification of 喜, where the scholar 士 has beans 豆 in the mouth 口 and is happy.)
Use words towards the scholar to get something (= out of his mouth 口) when: investigating.

	颉
JLPT no HSK

xié
Left: happy 吉 (simplification of 喜, where the scholar 士 has beans 豆 in the mouth 口 and is happy.), right: page, head 页 (=頁; head 目 with shoulders 八 and eyebrows 一)
The happyiness (above) the heads is: to fly upwards.

	秸
JLPT no HSK

jiē
Left: rice plant 禾, right: happy 吉 (simplification of 'happy' 喜, where the scholar 士 has beans 豆 in the mouth 口 and is happy.)
The rice plants make us happy, when they became straw.