A 1968 paper by Donald E. Houghton in *American Speech", "The Suffix -Wise", contrasts surviving older words (such as otherwise, clockwise, nowise) and the frequent modern coinage of forms (moneywise, soundwise, stylewise), available with one page preview from JSTOR. Included there are some examples from the nineteenth and early twentieth century.
The root meaning of "manner or extent" also survives in cognate ways, and "-ways" serves as a suffix in a good number of words, some (such as lengthwise/lengthways or nowise/noways) that directly compete for modern usage.
The synonymy of maybe and perhaps is discussed in this earlier English.SE Question, and a careful look discloses the composite nature of the word "per-haps".
Propriety of freely compounding with "-wise" was discussed in this equally early English.SE Question.