This is the 949th most frequent Hebrew word.
בהפועל
"In action" or "actively."
בהפועל is used as a proper noun referring to a sports club or organization.
בהפועל הם דנים בשיטות חדשות לאימון.
At Hapoel, they discuss new training methods.
בהפועל here means 'through the act of' or 'in the context of action'.
הפעולה התבצעה בהפועל מושלם של כל החברים.
The task was carried out through the perfect cooperation of all members.
בהפועל is used metaphorically to refer to 'in the action' or 'in the principle of action'.