SUBTLE

[adjective] -r, -st approving - not loud, bright, noticeable or obvious in any wayThe room was painted a subtle shade of pink.The play's message is perhaps too subtle to be understood easily by the youngest children in the audience.A subtle approach is necessary, because Philip does not like being criticized.(approving) Subtle can also mean small but important.There is a subtle difference between these two plans.(approving) Subtle can also mean achieved in a quiet way which does not attract attention to itself and which is therefore good or clever.a subtle plan/suggestionsubtle questions