• forthan,
• forthen,
• dor then,
• cor then,
• vor then,
• gor then,
• tor then,
• ror then,
• fir then,
• fkr then,
• flr then,
• fpr then,
• f0r then,
• f9r then,
• foe then,
• fod then,
• fof then,
• fot then,
• fo5 then,
• fo4 then

The adjective form of the phrase "for then" is nonexistent. "For then" is an adverbial phrase that functions to indicate a specific point in time or a cause-and-effect relationship. Adjectives typically describe or modify nouns, while "for then" does not possess that characteristic.

The plural form of "for then" is "for thens".

The singular form of the word "for then" is "for then".