The prefix 'Mal-' means 'bad' or 'ill'. 'Malaise' is a medical term for a general feeling of being unwell.

While '-ism' can denote a system (like Capitalism), in 'heroism' it denotes the qualities, actions, or character of a hero.

'Preamble' uses the prefix 'Pre-' meaning 'before', referring to an introductory statement that comes before a document.

The suffix '-logy' is derived from Greek 'logia' and consistently denotes 'the study of' a particular subject.

This question contrasts 'Mal-' (bad/poorly) with 'Anti-' (against/opposed to). 'Antisocial' means being against societal norms and interactions.

While all options mean 'capable of being' (eaten, heard, seen), 'Admirable' carries the stronger connotation of being 'worthy or deserving of' admiration.

The prefix 'Post-' means 'after'. A Postscript (or Epilogue) is a section of writing added after the main work is completed.

The analogy relates the meaning of an affix to its function as a verb. 'Anti-' means to oppose something. The suffix '-able' means something is capable of being acted upon, thus to 'enable' an action.

This is a word formation question. 'Post-' means 'after', 'war' is the subject, and '-logy' means 'the study of'. Therefore, 'Post-war-logy' is the logical construction.

The prefix "Un-" is commonly used with "Happy" to form "Unhappy".

The prefix 'Mal-' indicates something improper or bad, while 'Anti-' indicates opposition or hostility. 'Pathy' relates to feeling, so 'Antipathy' is a hostile or strong feeling of dislike.

The prefix 'Post-' means 'after' in Latin. A 'postmortem' examination is one conducted after death.

While '-ism' can denote a quality (Optimism) or action (Criticism), in 'Buddhism' it denotes a comprehensive religious and philosophical system followed by people.

The prefix 'Mal-' is derived from Latin for 'bad' or 'evil'. In 'malodorous', it modifies 'odorous' (smelling) to mean 'bad-smelling', indicating a poor quality.

The suffix '-able' is added to a verb or noun to form an adjective meaning 'capable of being' or 'fit to be'. Just as something that can be believed is 'believable', something based on reason is 'reasonable'.

The prefix 'Anti-' means 'against'. 'Theos' is Greek for God, and the suffix '-ism' denotes a belief system. Therefore, 'Antitheism' is the term for a doctrine that opposes belief in God.

'Predate' means to assign a date earlier than the actual one (Pre- = before), and 'Postdate' means to assign a later date (Post- = after). This pair directly shows the opposing temporal relationship on the same root word, 'date'.

The suffix '-logy' comes from the Greek 'logia', meaning 'study of'. In 'Etymology', it indicates the scientific study of its subject, which is the origin of words.

'Pre-war' and 'Preamble' use 'Pre-' (before) and 'Postnatal' uses 'Post-' (after), all relating to time. 'Antagonist' uses 'Anti-' (against), indicating an opponent.