Strong's #4305: promerimnao (pronounced prom-er-im-nah'-o)
from 4253 and 3309; to care (anxiously) in advance:--take thought beforehand.
Thayer's Greek Lexicon:
́
promerimnaō
1) to be anxious beforehand
Part of Speech: verb
Relation: from G4253 and G3309
Citing in TDNT: 4:589, 584
Usage:
This word is used 1 times:
Mark 13:11: "they shall lead you, and deliver you up, take no thought beforehand what ye shall speak, neither"