προσέχω
proséchō
pros-ekh'-o
from πρός and ἔχω; (figuratively) to hold the mind (νοῦς implied) towards, i.e. pay attention to, be cautious about, apply oneself to, adhere to.

KJV translates as: (give) attend(ance, ance at, ance to, unto), beware, be given to, give (take) heed (to unto); have regard