Strong's #6621: petha` (pronounced peh'-thah)
from an unused root meaning to open (the eyes); a wink, i.e. moment (compare 6597) (used only (with or without preposition) adverbially, quickly or unexpectedly):--at an instant, suddenly, X very.
Brown-Driver-Briggs Hebrew Lexicon:
ּ
petha‛
1) suddenness, in an instant
Part of Speech: substantive
Relation: from an unused root meaning to open (the eyes)
Usage:
This word is used 7 times:
Numbers 6:9: "And if any man die very suddenly by him, and he hath defiled the head"
Numbers 35:22: "But if he thrust him suddenly without enmity, or have cast upon"
Proverbs 6:15: "Therefore shall his calamity come suddenly; suddenly shall he be broken without remedy."
Proverbs 29:1: "that being often reproved hardeneth his neck, shall suddenly be destroyed, and that without remedy."
Isaiah 29:5: "shall be as chaff that passeth away: yea, it shall be at an instant suddenly."
Isaiah 30:13: "breaking cometh suddenly at an instant."
Habakkuk 2:7: "Shall they not rise up suddenly that shall bite thee, and awake that shall vex thee, and thou shalt be for booties"