INSUFFICIENTLY
insufficiently
(adverb) to an insufficient degree; “he was insufficiently prepared”
Source: WordNet® 3.1
Etymology
Adverb
insufficiently (comparative more insufficiently, superlative most insufficiently)
not sufficiently
Source: Wiktionary
In`suf*fi"cient*ly, adv.
Definition: In an insufficient manner or degree; unadequately.
INSUFFICIENT
In`suf*fi"cient, a. Etym: [L. insufficiens, -entis. See In- not, and
Sufficient.]
1. Not sufficient; not enough; inadequate to any need, use, or
purpose; as, the provisions are insufficient in quantity, and
defective in quality. "Insufficient for His praise." Cowper.
2. Wanting in strength, power, ability, capacity, or skill;
incompetent; incapable; unfit; as, a person insufficient to discharge
the duties of an office.
Syn.
– Inadequate; scanty; incommensurate; unequal; unfit; incompetent;
incapable; inefficient.
Source: Webster’s Unabridged Dictionary 1913 Edition