approximate in WordNet English dictionary

1. judge tentatively or form an estimate of (quantities or time)
   "I estimate this chicken to weigh three pounds"
   estimate  gauge  approximate  guess  judge 
   
2. be close or similar
   "Her results approximate my own"
   approximate  come close 
   

1. located close together
   "with heads close together"; "approximate leaves grow together but are not united"
   approximate  close together 
   
2. very close in resemblance
   "sketched in an approximate likeness"; "a near likeness"
   approximate  near 
   
3. not quite exact or correct
   "the approximate time was 10 o'clock"; "a rough guess"; "a ballpark estimate"
   approximate  approximative  rough