Word: launchest
Part of speech: Verb
Syllables: laun
chest
Definition: Alternative form of launch; get going; give impetus to
Morphemes:
Affix: launch
Language: en
PoS: Verb
Meaning: To start to operate.
Affix: -est
Language: en
PoS: Suffix
Meaning: Used to form the superlative of adjectives and adverbs.