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jettison
verb
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Divide jettison into syllables:

jet · ti · son

How to pronounce jettison:

Definition of jettison:

jettison (verb):
to abandon or give up
throw as from an airplane.
to get rid of as superfluous or encumbering omit or forgo as part of a plan or as the result of some other decision

Synonyms for jettison:

abandon
cast aside
cast away
cast out
chuck out
desert
discard
dispose
dump
forsake
put away
reject
relinquish
scrap
shed
slough off
throw away
throw on the scrapheap
throw out
toss
toss away
toss out

Antonyms for jettison:

acquire
allow
assert
begin
continue
defend
hoard
hold
hold on to
keep
maintain
pick up
put on
retain
save
start
take in
take on

Other 3-syllable words like jettison

Here are some other common words that have 3 syllables, like jettison does.

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Light syllables, having short vowels and no ending consonant, often occur in unstressed positions in polysyllabic words.

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