Home 5-syllable words inefficacious
DICTIONARY ENTRY 5 SYLLABLES

inefficacious

/,ɪnɛfə'keɪʃəs/ · ɪnɛfəkeɪʃəs

Inefficacious has 5 syllables: in · ef · fi · ca · cious.

in
01
ef
02
fi
03
ca
04
cious
05

adjective. Lacking the power to produce a desired effect.

ADVERTISEMENT leaderboard · 728×90
ADVERTISEMENT medium rectangle · 300×250
Syl·la·ble Words A reference for counting syllables in English words. Privacy · Terms · SyllableWords.net — 2026