IPA: /ɪmˈprɪsaɪs/
KK: /ɪmprɪˈsaɪs/
Not accurate or exact; lacking precision.
The measurements were imprecise, leading to errors in the calculations.
Imprecise → It is formed from "im-" (meaning not) and "precisus" (from Latin, meaning cut off or precise). The word "imprecise" means not cut off or not exact, indicating a lack of precision.
Think of 'not' ('im-') being added to 'cut off' ('precisus') to remember that 'imprecise' means something that is not exact or clear.