- 実は【じつは】 - as a matter of fact, by the way, to tell you the truth, to be honest, frankly 
- 真実【しんじつ】 - truth, reality, truly, really, absolute truth 
- 事実【じじつ】 - fact, truth, reality 
- 現実【げんじつ】 - reality, actuality, hard fact 
- 実際【じっさい】 - reality, actuality, truth, fact, actual conditions, practice (as opposed to theory), truly, really, indeed, actually, bhutakoti (limit of reality) 
- 実験【じっけん】 - experiment, experimentation 
- 確実【かくじつ】 - certain, sure, definite, reliable, sound, solid, safe, secure 
- 実力【じつりょく】 - (real) ability, true strength, merit, efficiency, competency, arms, force 
- 実に【じつに】 - indeed, really, absolutely, truly, actually, very, quite 
- 実現【じつげん】 - implementation (e.g. of a system), materialization, materialisation, realization, realisation, actualization, actualisation 
- 無実【むじつ】 - innocence, guiltlessness, false accusation, false charge, absence of the fact, insubstantiality, lacking substance, insincerity, dishonesty 
- 実行【じっこう】 - execution (e.g. of a plan), carrying out, practice, action, implementation, fulfillment, realization 
- 実家【じっか】 - (one's parents') home 
- 誠実【せいじつ】 - sincere, honest, faithful 
- 実況【じっきょう】 - actual state (of things), real state, actual condition, real condition, actual scene, live, on-the-scene, reporting live, live coverage, live broadcasting, Let's Play (YouTube, etc. playthrough of a video game) 
- 忠実【ちゅうじつ】 - faithful, devoted, loyal, honest, true 
- 実感【じっかん】 - real feeling, actual feeling, to actually feel, to have a real feeling (that ...), to experience personally 
- 忠実【まめ】 - diligent, hardworking, conscientious, sincere, healthy, fit, faithful, devoted 
- 口実【こうじつ】 - excuse, pretext 
- 実在【じつざい】 - actual existence, real existence, existing in real life