clue (n.)
- advice
- alerting
- answer
- catchword
- caution
- cue
- data
- datum
- documentation
- evidence
- exhibit
- fact
- facts
- gesture
- glimmer
- glimmering
- grounds
- hint
- implication
- index
- indication
- indicator
- information
- inkling
- innuendo
- insinuation
- intimate
- intimation
- key
- kick
- lead
- look
- manifestation
- mark
- monition
- muniments
- nod
- notion
- nudge
- office
- pointer
- post
- premises
- prompt
- proof
- scent
- sign
- signal
- spoor
- steer
- suggestion
- suspicion
- symptom
- tell
- telltale
- tip
- tip-off
- token
- trace
- track
- vestige
- warning
- whiff
- whisper
- wind
- wink
