Ranked by relevance and common usage.
Keep "old-line" when the sentence already sounds natural, when a synonym would add unintended emphasis, or when readers need the most familiar wording. A synonym should clarify or sharpen the message, not simply make the sentence look more varied.
If two options seem close, choose the one that best matches the audience and purpose of the sentence.
Choose a synonym only if it keeps the core idea of "old-line" intact in the sentence you are editing.
Check whether the replacement sounds more formal, casual, emotional, technical, or forceful than the original word.
Read the full sentence after the swap. Keep the synonym only when the sentence becomes clearer or more precise.
Review note: Synonym lists are ranked with lexical data and reviewed for practical writing value. Use the comparison notes, sentence evidence, and source labels together; a high-ranking synonym can still be wrong when the audience, register, or grammar changes.
After choosing a replacement for "old-line", read the sentence once for meaning and once for rhythm. The best synonym should feel natural in the full sentence, not only accurate in a word list.
If the synonym makes the sentence slower, vaguer, or more dramatic than intended, keep "old-line" or choose a simpler alternative from the closest-match group.
OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.
4 total sentences available.
I am deliberately convinced that Mr. Filmore has not the least chance of success, and that if it be at all possible to defeat Fremont, the Democratic party, with their candidates Buchanan and Breckinridge, with the aid of the Union-loving Old-line Whigs, is the only party which has the least chance to do so.
Source: wiktionary
One of the old line insurance companies said to me recently, that they never made anything out of their underwriting business, but made their profit out of the investments of the reserved fund
Source: wiktionary
Gay alcoholism in the Boston area has come out of its closet. Here and across the nation increasing numbers of us are working for the time when gay alcoholics will no longer be subjected to the discrimination and indignities that characterized old-line treatment programs until now.
Source: wiktionary
I also started reading a great deal about Internet transactions and the impact of the Web on more old-line businesses
Source: wiktionary
Closest matches include backward, confirmed, conservative, deep dyed, deep rooted.
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.