A dangling modifier is a word or phrase modifying a term that has been omitted or to which it cannot easily be linked. To correct a dangling modifier, reword the sentence by either (1) changing the modifying phrase to a clause with a subject or (2) changing the subject of the sentence to the word that should be modified.
A modifier is misplaced if it appears to modify the wrong part of the sentence or if we cannot be certain what part of the sentence the writer intended it to modify. To correct a misplaced modifier, move the modifier next to the word it describes.
Infinitives consist of the marker to plus the plain form of the verb. The two parts of the infinitive are widely regarded as a grammatical unit that should not be split. Splitting an infinitive is placing an adverb between to, the sign of the infinitive, and the verb.
Sometimes, a split infinitive may be natural and preferable, though it may still bother some readers.
A squinting modifier is one that may refer to either a preceding or a following word, leaving the reader uncertain about what it is intended to modify. Correct a squinting modifier by moving it next to the one word it is intended to modify.