enquiry
One line of enquiry is that the man could have taken his own life.
All lines of enquiry are still open and we must assume nothing.
What are the main lines of enquiry you intend to pursue?
Investigators are pursuing several other possible lines of enquiry
This research brings together two lines of enquiry into early child language.
SMART Vocabulary: related words and phrases Analysing and evaluating
adjudication
analysable
analyse
analyser
analyst
assign
dive
have the measure of someone/somethingidiom
inspect
inspection
interpret
interpretable
interpretive
microscope
reinterpret
reinterpretation
reinvestigate
reinvestigation
research
weigh
You can also find related words, phrases, and synonyms in the topics:
Questioning people & asking questions in general