濃厚

1. Origins, structure, and basic meaning

• Structure: 濃厚 (のうこう) is a na-adjective for a rich or intense quality and for a strong likelihood or suspicion.
• Basic usage: It describes a rich flavor or evidence making a possibility highly likely.
  • このスープはチーズの味が濃厚だ。 — This soup has a rich cheese flavor.
  • 残された足跡から、動物が通った疑いが濃厚になった。 — The remaining footprints made it highly likely that an animal had passed.

2. Common pitfalls and similar expressions

• Sensory richness and abstract likelihood
  • 濃厚だ can describe an intense sensory quality such as flavor or, in 疑いが濃厚だ, a suspicion or possibility that has become strong.