Vocabulary and Synonyms

Shibboleth refers to a custom, phrase, or usage that distinguishes one group of people from another. In modern usage, it often means a slogan or belief that identifies members of a particular group. 'Slogan' is the closest match among the options.

Satiated means filled to satisfaction, or supplied beyond need. 'Surfeited' means having an excessive supply of something, which is the closest synonym. Persuaded, completed, and convinced are unrelated to the meaning of satiated.

Sine qua non is a Latin phrase meaning 'without which not' - an indispensable or essential condition. 'Indispensable precondition' accurately captures this meaning. Bonus and unnecessary qualification contradict the term's essence.

Supplicate means to make a humble or earnest request, especially to someone in authority. 'Petition humbly' captures both the request aspect and the humility. 'Beg favours' is too informal, while 'request earnestly' misses the humility aspect.

Skulk means to move in a stealthy, furtive manner, or to hide out of cowardice. 'Move stealthily' directly captures this meaning. The other options - resent working, brood silently, shirk work - describe attitudes or avoidance behaviors, not the physical act of moving furtively.

'Skimp' means to be stingy with or provide insufficiently of something. 'Stint on' means to limit or use sparingly - essentially the same meaning as skimp. Shirk work means avoiding work, leave out relatives is unrelated context, and skip means omit but doesn't convey the deliberate withholding that skimp implies.

Amiable means friendly and best fits the blank.

As the cause to become unpopular must be a negative characteristic. Here, only option 3 makes sense and all the other options are positive words and do not fit with 'unpopular'.

It means a system of secret writing based on a key, or set of predetermined rules or symbols... i.e a code

A cage is an enclosed structure used to confine animals or birds. 'Enclosure' is the closest synonym as it directly refers to a surrounding barrier that contains something. The other options (hospital, office, bungalow) are specific types of buildings with unrelated functions.