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thick; deep; heavy
kind; cordial; hospitable; warm; faithful
serious (of an illness)
abundant
この本は厚くて読むのに時間がかかる。
This book is thick and takes time to read.
厚い雲に覆われて日が差さない。
Thick clouds are covering the sky and no sun comes through.
冬は厚手のコートを着ないと寒くてたまらない。
In winter, you can't stand the cold without wearing a heavy coat.