Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun clutter

2 senses of clutter

Sense 1
clutter, jumble, muddle, fuddle, mare's nest, welter, smother -- (a confused multitude of things)
       => disorderliness, disorder -- (a condition in which things are not in their expected places; "the files are in complete disorder")

Sense 2
clutter -- (unwanted echoes that interfere with the observation of signals on a radar screen)
       => radar echo -- (an electronic signal that has been reflected back to the radar antenna; contains information about the location and distance of the reflecting object)
       => noise, interference, disturbance -- (electrical or acoustic activity that can disturb communication)

Antonyms of verb clutter

1 sense of clutter

Sense 1
clutter, clutter up -- (fill a space in a disorderly way)
       Antonym of unclutter (Sense 1)
      => unclutter, clear -- (rid of obstructions; "Clear your desk")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb clutter

1 sense of clutter

Sense 1
clutter, clutter up -- (fill a space in a disorderly way)
       => fill, fill up, make full -- (make full, also in a metaphorical sense; "fill a container"; "fill the child with pride")