How many letters does the top answer for “restrict (someone or something) so as to make free movement difficult” have?

The most common answer is cumber (6 letters).

Crossword clue: restrict (someone or something) so as to make free movement difficult

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

cumber 6 letters wn-def

restrict (someone or something) so as to make free movement difficult

encumber 8 letters wn-def

restrict (someone or something) so as to make free movement difficult

restrain 8 letters wn-def

restrict (someone or something) so as to make free movement difficult