i Register
In some senses, probe is marked as figuratively. Watch for register when choosing this word.
ADV
deep/deeply
Detectives probed deeply into the suspect's background to find evidence of the crime.
further | gently
PREP
for
The detective probed for evidence at the crime scene yesterday afternoon.
into
Investigators decided to probe into the company's financial records after discovering irregularities.
with
She probed deeper into the issue with careful questions during the meeting.