Definitions

1. adjective

most full of or resembling silt; having the greatest amount of sediment or soil particles suspended in water

“The siltiest part of the riverbed was difficult to navigate with our boat.”

2. adverb

in the most full of or resembling silt manner

“The river was flowing siltiest near the town due to heavy rainfall.”

3. noun

the superlative form of silt

“The siltiest area of the riverbed was located near the delta.”