Painstaking and careful not to miss or omit any detail. / Utter; complete; absolute.

(obsolete) Through.

(UK, dialect) A furrow between two ridges, to drain off the surface water.

The state of being thorough. / Attention to detail.

plural of thorough

plural of thoroughness

(Christianity, historical) A scheme devised in 17th-century England by Thomas Wentworth, 1st Earl of Strafford to establish absolute monarchy in England, involving the appointment of Arminian clergy.

comparative form of thorough: more thorough

(obsolete) Thoroughly, through to the end.

(obsolete) Pierced through.