IPA: /ˌrɛmɪˈnɪʃənt/
KK: /rɛmɪˈnɪʃənt/
Relating to or suggesting memories of the past.
The old photographs were reminiscent of my childhood days.
Reminiscential → It is formed from "reminiscent" (from Latin "reminisci", meaning to remember) and the suffix "-ial" (meaning relating to). The word "reminiscential" refers to something that is related to or evokes memories.
Think of 'reminiscent' which means to remember, and the '-ial' suffix indicates a relation. This helps you remember that 'reminiscential' relates to evoking memories.
No commonly confused words.