ῥύομαι

Verb

 * 1) to protect, guard, preserve
 * 2) to rescue, save, deliver
 * 3) to keep something dangerous away
 * 4) to thwart, curb
 * 5) to set free, ransom, redeem; to pay for

Usage notes
The form, under which Liddell and Scott and Cunliffe list the word, is unattested; instead the present stem takes the forms and  with long or short. Present (LSJ) or perfect (Cunliffe), and imperfect (LSJ) or pluperfect (Cunliffe) forms may be thematic or athematic.

The aorist has six possible stems: with long, short , or no augment; double or single  first aorist tense suffix; and long or short.