Practise the thinking. Keep the judgement.
楽しい (tanoshii): Fun; enjoyable
たのしい
tanoshii
Meaning
Fun; enjoyable
Two original examples
昨日の旅行は楽しかったです。
Yesterday’s trip was enjoyable.
楽しい時間をありがとうございました。
Thank you for an enjoyable time.
Usage and distinctions
楽しい is an い-adjective. Its past is 楽しかった and its negative is 楽しくない. It describes enjoyment; the related 楽（らく）means ease or comfort and has different grammar.