Strong's #5431: phrontizo (pronounced fron-tid'-zo)
from a derivative of 5424; to exercise thought, i.e. be anxious:--be careful.
Thayer's Greek Lexicon:
́
phrontizō
1) to think, to be careful
2) to be thoughtful or anxious
Part of Speech: verb
Relation: from a derivative of G5424
Usage:
This word is used 1 times:
Titus 3:8: "that they which have believed in God might be careful to maintain good works. These things"