Denshi Jisho — Online Japanese dictionary

いんしん prosperity
Na-adjective, Noun 
やか にぎやか bustling; busy
Common word, Na-adjective 
わう にぎわう to prosper; to flourish; to do thriving business; to be crowded with people
Common word, Godan verb with u ending, Intransitive verb 
あう にぎあう to prosper; to flourish; to do thriving business; to be crowded with people
Godan verb with u ending, Intransitive verb 
わい にぎわい prosperity; bustle; activity; crowd; turnout
Noun 
わす にぎわす to make prosperous; to enliven
Godan verb with su ending, Transitive verb 
やかさ にぎやかさ business; liveliness
Noun 
々しい にぎにぎしい lively; merry; gay
Adjective 
しい にぎにぎしい lively; merry; gay
Adjective 
を極める いんしんをきわめる to enjoy prosperity
Expression, Ichidan verb, Obsolete term 
枯れ木も山のわい かれきもやまのにぎわい (similar to the saying) half a loaf is better than none (lit: even a dead tree adds to the interest of a mountain)
Expression 

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