〜くて・〜で
Joins two adjectives in one sentence (both … and …)machine translation
Formationい-adjective (drop い) + くて / な-adjective・noun + で
To say something is both this and that, put the first adjective into its connective form: い-adjectives drop い and add くて (広い → 広くて); な-adjectives and nouns add で (静か → 静かで). The adjective at the end of the sentence conjugates normally.
The two adjectives being joined should point the same way — both praising or both criticizing. If the two ideas contrast, use が or でも instead of 〜くて.
The adjective いい conjugates from the stem よ: よくて.
Examples
この部屋は広くて、明るいです。
This room is spacious and bright.
妹は元気で、かわいいです。
My little sister is lively and cute.
昨日は天気がよくて、暖かかったです。
Yesterday the weather was nice and warm.