[thur-oh, thuhr-oh] 
| 1. | executed without negligence or omissions: a thorough search. |
| 2. | complete; perfect; utter: thorough enjoyment. |
| 3. | extremely attentive to accuracy and detail; painstaking: a thorough worker; a thorough analysis. |
| 4. | having full command or mastery of an art, talent, etc.: a thorough actress. |
| 5. | extending or passing through. |
| 6. | Archaic. through. |
| 7. | (initial capital letter ) English History. the administrative policies of the Earl of Stafford and Archbishop Laud during the reign of Charles I: so called because they were uncompromisingly carried out. |
| thor·ough (thûr'ō, thŭr'ō) adj.
Variant of through. [Middle English thorow, through, thorough, from Old English thuruh, from end to end, through; see terə-2 in Indo-European roots.] thor'ough·ly adv., thor'ough·ness n. |