Straightened adverbs are provided in this article. The words listed here are commonly found along with the verb straightened in sentences. This reference page helps answer the question what are some adverbs that describe or modify the verb STRAIGHTENED.
abruptly, carefully
finally, immediately
quickly, slightly
slowly, suddenly
Hope this word list had the straightened adverb you were looking for. In addition to adverbs used with straightened, other example verb adverb pairings can be found on this site.
You can help by adding more adverbs in the comments. Thanks.