INEFFECTIVELY

inefficaciously, ineffectively

(adverb) in an ineffective manner; “he dealt with the problem rather ineffectively”

Source: WordNet® 3.1

Etymology

Adverb

ineffectively (comparative more ineffectively, superlative most ineffectively)

In an ineffective manner.

Source: Wiktionary

In`ef*fect"ive*ly, adv.

Definition: In an ineffective manner; without effect; inefficiently; ineffectually.

INEFFECTIVE

In`ef*fect"ive, a. Etym: [Pref. in- not + effective: cf. F. ineffectif.]

Definition: Not effective; ineffectual; futile; inefficient; useless; as, an ineffective appeal. The word of God, without the spirit, [is] a dead and ineffective letter. Jer. Taylor.

Source: Webster’s Unabridged Dictionary 1913 Edition