thorough

Meanings

Adjective

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

Noun

• A furrow between two ridges, to drain off the surface water.

Origin

• From Middle English thoruȝ, þoruȝ, from Old English þuruh, a byform of Old English þurh, whence comes English through. The adjective derives from the preposition and adverb. The word developed a syllabic form in cases where the word was fully stressed: when it was used as an adverb, adjective, or noun, and less commonly when used as a preposition.