Synonyms for through-and-through
EXAMPLES FROM THE WEB FOR THROUGH-AND-THROUGH
The staircase has through-and-through ventilation of its own.
They are all abstractions from the Whole, and of course the “through-and-through” character can not be found in them.
The “through-and-through” philosophy, as it actually exists, reminds many of us of that clergyman.
In abstract systems the “through-and-through” Ideal is realized on every hand.
The conviction in his stare—its through-and-through conviction—had infected her; and she gave in to it for the moment, crushed.
This needle had to pass completely through the fabric two times (a through-and-through motion) for every stitch.
c.1300, metathesis of Old English þurh, from West Germanic *thurkh (cf. Old Saxon thuru, Old Frisian thruch, Middle Dutch dore, Dutch door, Old High German thuruh, German durch, Gothic þairh "through"), from PIE root *tere- "to cross over, pass through, overcome" (cf. Sanskrit tirah, Avestan taro "through, beyond," Latin trans "beyond," Old Irish tre, Welsh tra "through").
Not clearly differentiated from thorough until early Modern English. Spelling thro was common 15c.-18c. Reformed spelling thru (1917) is mainly American English.