Denshi Jisho — Online Japanese dictionary

習う ならう to take lessons in; to be taught; to learn; to study; to get training in
Common word, Godan verb with u ending, Transitive verb 
習い ならい as is habit; the way life normally is
Noun 
習字 しゅうじ penmanship
Common word, Noun 
習わし ならわし customary practice; customary practise; habit; traditional event
Noun, No-adjective 
習わす ならわす to make (someone) learn
Godan verb with su ending, Transitive verb 
習慣 しゅうかん custom; habit; manners
Common word, Noun, No-adjective 
習性 しゅうせい trait
Common word, Noun 
習得 しゅうとく learning; acquisition
Common word, Noun, Suru verb 
習合 しゅうごう syncretism
Noun, Suru verb 
習作 しゅうさく (a) study (e.g. in music, art, sculpture, etc.); etude; practice piece
Noun 
習俗 しゅうぞく manners and customs; folkways; usage
Noun 
習癖 しゅうへき (bad) habit
Noun 
習練 しゅうれん practice; practise; training; discipline
Noun, Suru verb 
習い事 ならいごと accomplishment; lesson; practice; practise
Noun 
習々 しゅうしゅう gentle breeze
Noun, Onomatopoeic or mimetic word 
習習 しゅうしゅう gentle breeze
Noun, Onomatopoeic or mimetic word 
習熟 しゅうじゅく skilled; expert; mastery
Noun, Suru verb 
習熟度 しゅうじゅくど proficiency level; degree of skill; learning level
Noun 
習慣づける しゅうかんづける to make a habit of; to make it a practice to
Ichidan verb 
習慣付ける しゅうかんづける to make a habit of; to make it a practice to
Ichidan verb 
習い性と成る ならいせいとなる Habit is a second nature
Expression, Idiomatic expression 
習うより慣れよ ならうよりなれよ practice makes perfect (implying that it is better to learn from personal experience than from an instructor)
Expression 
習合神道 しゅうごうしんとう syncretized Shinto; amalgamated Shinto
Noun 
習得観念 しゅうとくかんねん acquired idea (as opposed to innate); acquired ideas
Noun, Obscure term 
習慣性薬物 しゅうかんせいやくぶつ addictive drug
Noun 

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