The missing syllable is ORCHESTRA
the answer is noun phrases
Answer:
iceseh → seiche
wbea rrhvoa → harbor wave
Idlisaen → landslide
(I'm not even sure if there's a glitch with this unscrambled word because the most you can scramble with it is only 7 letters instead of 8)
fooear Is → Sea-floor
Arable land full of crops
