SETBACK

reverse, reversal, setback, blow, black eye

(noun) an unfortunate happening that hinders or impedes; something that is thwarting or frustrating

Source: WordNet® 3.1

---

Etymology

Noun

setback (plural setbacks)

An obstacle, delay, disadvantage, blow (an adverse event which retards or prevents progress towards a desired outcome)

(US) The required distance between a structure and a road.

(architecture) A step-like recession in a wall.

An offset to the temperature setting of a thermostat to cover a period when more or less heating is required than usual.

(possibly archaic) A backset; a countercurrent; an eddy.

(archaic) A backset; a check; a repulse; a relapse.

Anagrams

• backest, backets, backset

Source: Wiktionary

---

Set"back`, n.

1. (Arch.)

Definition: Offset, n., 4.

2. A backset; a countercurrent; an eddy. [U. S.]

3. A backset; a check; a repulse; a reverse; a relapse. [Colloq. U.S.]

Source: Webster’s Unabridged Dictionary 1913 Edition

---