fleetingly adverb - Definition, pictures, pronunciation and usage notes | Oxford Advanced Learner's Dictionary at OxfordLearnersDictionaries.com.
Is fleetingly an adjective?
FLEETING (adjective) definition and synonyms | Macmillan Dictionary.
Is crinkly an adjective or adverb?
CRINKLY (adjective) definition and synonyms | Macmillan Dictionary.