Definition

Adverb: - To an inadequate or deficient degree; not enough or not sufficiently.

Usage

The adverb "insufficiently" is used to modify verbs, adjectives, or other adverbs to indicate that the action, quality, or manner described falls short of what is necessary, adequate, or desired. It directly expresses a lack or shortcoming.

Examples

• The project failed because it was insufficiently funded.
• The report was criticized for being insufficiently detailed.
• She felt insufficiently informed to make a decision.
• The law was applied insufficiently and inconsistently.

Advanced Usage

• "Insufficiently" can be used in formal, academic, and critical contexts to pinpoint a specific deficiency.
  • The theory was rejected for being insufficiently supported by empirical evidence.
• It often precedes past participles (e.g., prepared, studied, considered) or descriptive adjectives (e.g., clear, robust, secure).
  • The data remains insufficiently analyzed.

Variants and Related Words

• Insufficient (adjective): Not enough; inadequate.
  • There was insufficient evidence to convict.
• Insufficiency (noun): The state of being insufficient; a lack.
  • The insufficiency of resources halted progress.

Synonyms

• Inadequately
• Deficiently
• Unsatisfactorily

Antonyms

• Sufficiently
• Adequately
• Satisfactorily
• Amply

Related Phrases and Constructions

• Insufficiently + Past Participle/Adjective: This is the most common construction, forming a critique of the degree to which an action was performed or a state was achieved.
  • insufficiently tested, insufficiently transparent, insufficiently motivated

Adverb

1. to an insufficient degree
   • he was insufficiently prepared