彼が成功するに違いないと感じている

N5 彼 kare he N3 成功 seikou success, achievement N5 する suru do, perform, try N3 違いない chigai nai no doubt, surely, must be N3 感じ kanji feeling, sense, impression N5 ている te iru be doing

N3 彼 hi / kare, kano, ka.no he, that, the N3 成 sei, jou / na.ru, na.su, -na.su turn into, become, get N1 功 kou, ku / isao achievement, merits, success N3 違 i / chiga.u, chiga.i, chiga.eru, -chiga.eru, taga.u, taga.eru difference, differ, différence N3 感 kan emotion, feeling, sensation

N4 〜に違いない ni chigai nai Indicates strong certainty based on evidence or deduction, attaches to verb adjective or noun, means must surely be N5 〜ている te iru Indicates ongoing action, continuous state, repeated habit, or resulting condition depending on context N5 〜が ga Marks the grammatical subject, highlights new information, can also show slight contrast in some sentences N5 〜に ni Indicates destination, target, arrival point, specific time, or person receiving an action N5 〜と to Indicates company, quotation, natural condition, complete list, or direct connection between elements