In English vocabulary, choose the best one word substitute for the phrase “praise highly in speech or writing”.

Introduction:
One word substitution questions help test precise vocabulary and understanding of subtle differences between words with similar tones. The phrase praise highly in speech or writing describes a very strong positive expression about a person or thing, often used at formal events, in tributes, or in literature. The correct answer must capture both the idea of praise and the manner in which it is delivered, that is through spoken or written language.

Given Data / Assumptions:

- The phrase given is praise highly in speech or writing. - Four options are provided: Chide, Eulogise, Chastise, Reprimand. - Only one option should match the positive sense of high praise. - The remaining options suggest criticism or scolding.

Concept / Approach:
Eulogise is a verb that means to praise someone or something very highly, especially in a formal speech or written text. It is commonly seen in the context of funeral speeches, public tributes, and ceremonial addresses. In contrast, chide, chastise, and reprimand all involve scolding or expressing disapproval. Understanding the positive versus negative tone of the words helps us quickly eliminate the wrong choices and identify the correct one.

Step-by-Step Solution:
Step 1: Focus on the phrase praise highly in speech or writing and note its positive and formal tone. Step 2: Recall that eulogise means to strongly praise someone, often in a speech or article, especially after their death. Step 3: Recognise that chide, chastise, and reprimand all imply scolding, criticism, or correction of wrongdoing. Step 4: Eliminate the words that clearly carry a negative sense and choose the positive word eulogise.

Verification / Alternative check:
Standard dictionaries define eulogise as to speak or write in high praise of someone or something. Example sentences such as The mayor eulogised the retiring teacher confirm that the word refers to formal praise. The collocations eulogise a leader, eulogise the efforts of a team, or eulogise the bravery of soldiers further strengthen this meaning.

Why Other Options Are Wrong:
Chide means to scold mildly. Chastise means to punish or criticise severely. Reprimand means to formally express disapproval. All three convey negative feedback rather than praise and therefore do not match the definition provided in the question. They are antonyms in tone rather than synonyms.

Common Pitfalls:
Candidates sometimes select words simply because they have seen them in serious or formal contexts, forgetting to check whether the emotional tone is positive or negative. It is important to group similar words by meaning and tone while learning vocabulary, for example grouping eulogise, applaud, commend together and keeping chide, rebuke, reprimand in a different group for criticism.

Final Answer:
Eulogise is the correct one word substitute for the phrase praise highly in speech or writing.