Antonyms

Languish means to suffer, lose strength, or fail to make progress. Enjoy (B) is the opposite because it conveys pleasure, satisfaction, and positive experience. Suffer (A) is a synonym, perish (C) and ill (D) relate to negative states, and distressed (E) describes suffering - all similar to languish rather than opposite.

Languor means a state of physical or mental weakness, lack of energy, or tiredness. Strength (A) is the opposite because it represents power, vigor, and vitality. Weakness (B) is a synonym, stillness (C) and illness (D) relate to languor, and pleasant (E) doesn't convey strength or energy - none are true opposites.

Lacerate means to tear, cut deeply, or wound (either physically or emotionally). Heal (B) is the opposite because it means to recover or make whole again. Hurt the feelings (A) and tear the flesh (C) describe what lacerate does, wounded (D) is the result of laceration, and symptomatic (E) is unrelated.

Lean means to incline, bend, or rest against something in a slanted position. Straighten (B) is the opposite - to make upright or return to a vertical position. Slothful (A) means lazy, tide (C) is a noun referring to rising/falling water, incline (D) is a synonym, and pacify (E) means to calm - none are true opposites.

Laud means to praise, extol, or express approval. Condemn (A) is the opposite because it means to express strong disapproval or criticize harshly. Praise (B) is a synonym, please (C) means to give satisfaction, upset (D) means to distress, and wonderful (E) is an adjective describing something very good - none convey harsh disapproval.

Lackadaisical means showing no enthusiasm, energy, or interest. Enthusiastic is the direct opposite, meaning having or showing intense and eager enjoyment, interest, or zeal.

Liberate means to set someone free from imprisonment, slavery, or oppression. Imprison is the direct opposite - to put someone in prison or confine them against their will.

Singular means being the only one of its kind, unique, or distinctive. Ordinary means common, usual, or lacking special qualities. These are direct opposites - singular implies exceptional singularity while ordinary implies commonness.

Slothful means lazy whereas sprightly means full of energy.

'Be no slouch' is an idiomatic expression meaning to be capable, competent, effective, or hardworking. Inefficient means lacking efficiency, competence, or productivity. These are opposites in the context of capability and performance.

Opprobrium means public disgrace, shame, contempt, or scorn resulting from disgraceful conduct. Praise means expressing approval, admiration, or commendation. These are direct opposites - opprobrium is negative public judgment while praise is positive recognition.

'Under duress' means under threat, coercion, compulsion, or force - doing something because you're being pressured or forced against your will. Volition refers to the act of making a conscious choice or using one's will. These are opposites - duress implies lack of free choice while volition implies free will.

Solicitous means showing care, concern, attention, or eagerness - often to the point of being anxious or overly attentive. 'Showing no concern' is the direct opposite - indifference, lack of care, or complete disregard.

Laconic means 'brief' and verbose means 'detailed'.

Antonym of 'autonomous' is 'dependent'. The rest are synonyms.