多多少少 is a reduplicated form of the pair 多 (many/much) and 少 (few/little). It softens a statement, implying something is true but to an uncertain or modest degree. Similar in function to 多少 but more emphatic.
grammar
Often used before adjectives or verbs to indicate a partial, hedged degree: 多多少少有些… (somewhat…), 多多少少受到影响 (affected to some extent).
