確か
0%
Log in to evaluate your pronunciation.
No feedback yet. Please speak to see your results.
Base na-adjective form. Can be used as a noun or adjective to express certainty or confirmation.
Theme
Two classmates, Taro and User, are studying for an exam in the library, trying to confirm details from their notes.
確か
たしか
certain / sure
Core Language Building BlocksCore Adjectives
Memory Hook
To remember 『たしか』 (tashika, 'certain'), think of a 'tack' that's sure to hold something in place — 'tack-sure' → たしか (tashika, 'certain').
Cultural Note
『たしか』 (tashika) is often used in polite conversation to express certainty or to confirm information, such as 『たしかに』 (tashika ni, 'certainly'). It can also be used to mean 'if I remember correctly' when recalling past events.
Forms
Base: 確かBase na-adjective form. Can be used as a noun or adjective to express certainty or confirmation.
Negative: 確かじゃないAdd 『じゃない』 (janai, 'not') after the base form → 『確かじゃない』 (tashika janai).
Past: 確かだったAdd 『だった』 (datta, past) after the base form → 『確かだった』 (tashika datta).
Adverbial: 確かにAdd 『に』 (ni, adverbial) after the base form → 『確かに』 (tashika ni).
Comparative: より確かComparative formed with modifier 『より』 (yori, 'more than') + base form.
Superlative: 一番確かSuperlative formed with 『一番』 (ichiban, 'most') + base form.