Antonyms of verb unclutter

1 sense of unclutter

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

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

1 sense of unclutter

Sense 1
unclutter, clear -- (rid of obstructions; "Clear your desk")
       => change, alter, modify -- (cause to change; make different; cause a transformation; "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue")

Antonyms of adj uncluttered

1 sense of uncluttered

Sense 1
uncluttered, unlittered -- (having nothing extraneous; "an uncluttered room"; "the unlittered shoulders of the road")

INDIRECT (VIA tidy) -> untidy -- (not neat and tidy; "careless and untidy in her personal habits"; "an untidy living room"; "untidy and casual about money")

Similarity of adj uncluttered

1 sense of uncluttered

Sense 1
uncluttered, unlittered -- (having nothing extraneous; "an uncluttered room"; "the unlittered shoulders of the road")
       => tidy (vs. untidy) -- (marked by order and cleanliness in appearance or habits; "a tidy person"; "a tidy house"; "a tidy mind")