the knock (noun) disappointment: mental upset; displeasure
Sinonime: adverse fate,
adversity, bafflement,
blow,
chagrin,
defeat,
despondency,
discontent, discouragement, disenchantment, disgruntlement,
disillusion, disillusionment,
dissatisfaction,
distress,
failure,
frustration, lack of success, letdown,
mortification, nonsuccess,
regret,
setback, the knocks, unfulfillment
Antonime: delight,
encouragement,
euphoria,
happiness,
pleasure,
satisfaction