using System;
using System.Linq;
using System.Text.RegularExpressions;

public class Test
{
	public static void Main()
	{
		char[] separators = { ' ', '.', ',', '!', '?', ':', ';', '(', ')', '\t' };
		string[] wordsToDelete = { "Hello", "Thanks", "kinda" };
		string SepPattern = new String(separators).Replace(@"\", @"\\").Replace("^", @"\^").Replace("-", @"\-").Replace("]", @"\]");
		var pattern = $@"\b(?:{string.Join("|", wordsToDelete.Select(Regex.Escape))})\b[{SepPattern}]*";
		Console.WriteLine(pattern);
		Regex rx = new Regex(pattern, RegexOptions.Compiled);
		DeleteWordsFromText("Hello, how are you?", rx);
		DeleteWordsFromText("Thanks, I am kinda. good.", rx);
	}
	public static void DeleteWordsFromText(string text, Regex p)
    {
    	Console.WriteLine($"---- {text} ----");
        Console.WriteLine(p.Replace(text, ""));
    }
}