1) Approximate 2) Approximative 3) Careless 4) Estimated 5) Faulty 6) Imprecise 7) Inaccurate 8) Loose 9) Vague 1) Approximate 2) Approximative 3) Free 4) French word used in English 5) Imprecise 6) Inaccurate 7) Liberal 8) Loose 9) Not accurate 10) Not exact 11) Not meticulous 12) Not precise 13) Not strictly accurate 14) Rough 15) Round 
• (a.) Not exact; not precisely correct or true; inaccurate.
In`ex·act' adjective [ Prefix in- not + exact : confer French inexact .] Not exact; not precisely correct or true; inaccurate. 
[adj] - not exact
adjective not exact
not exact; not strictly precise or accurate.