αἰφνίδιος aiphnídios

Meaning

unexpected, i.e. (adverbially) suddenly

In the King James Version: sudden, unawares

Derivation: from a compound of G1 (Α) (as a negative particle) and G5316 (φαίνω) (compare G1810 (ἐξαίφνης)) (meaning non-apparent);

Where it is used

• Luke 21:34 But watch yourselves, or your hearts will be weighed down by dissipation, drunkenness, and the worries of life—and that day will spring upon you suddenly like a snare.
• 1 Thessalonians 5:3 While people are saying, “Peace and security,” destruction will come upon them suddenly, like labor pains on a pregnant woman, and they will not escape.