I’m not sure of the details of your specific question type… but most questions have the option to force a response

Hello again! I’d recommend hiding the Next button until the desired ‘words found’ score is reached. Code is updated below so that the Next button only displays when all 19 words are found:

this.hideNextButton();

var countrygrid = y
      'A', 'I', 'V', 'T', 'A', 'L', 'N', 'I', 'E', 'T', 'S', 'G', 'A', 'T', 'H', 'C', 'E', 'I', 'L'],
    r'G', 'A', 'C', 'H', 'I', 'E', 'V', 'E', 'A', 'N', 'D', 'S', 'N', 'T', 'V', 'A', 'A', 'P', 'W'],
    r'A', 'C', 'C', 'O', 'M', 'P', 'L', 'I', 'S', 'H', 'S', 'R', 'O', 'R', 'I', 'I', 'O', 'C', 'I'],
    r'S', 'T', 'E', 'J', 'V', 'U', 'E', 'T', 'Y', 'C', 'N', 'L', 'E', 'I', 'A', 'R', 'I', 'D', 'N'],
    r'O', 'U', 'P', 'M', 'J', 'J', 'L', 'C', 'O', 'B', 'A', 'A', 'T', 'U', 'T', 'P', 'N', 'E', 'N'],
    r'B', 'E', 'C', 'I', 'V', 'E', 'S', 'C', 'N', 'N', 'T', 'N', 'U', 'M', 'E', 'A', 'S', 'V', 'E'],
    r'M', 'A', 'E', 'C', 'K', 'A', 'L', 'L', 'E', 'A', 'U', 'W', 'G', 'P', 'L', 'E', 'X', 'C', 'R'],
    r'E', 'G', 'J', 'N', 'E', 'A', 'T', 'V', 'O', 'A', 'R', 'A', 'B', 'H', 'T', 'B', 'R', 'Z', 'W'],
    r'X', 'E', 'J', 'W', 'N', 'S', 'S', 'L', 'S', 'V', 'L', 'F', 'S', 'C', 'O', 'R', 'E', 'G', 'R'],
    r'U', 'Y', 'P', 'D', 'I', 'V', 'S', 'S', 'A', 'S', 'A', 'Z', 'L', 'L', 'R', 'L', 'L', 'S', 'O'],
    r'L', 'R', 'R', 'M', 'A', 'C', 'T', 'P', 'S', 'M', 'T', 'K', 'G', 'T', 'N', 'V', 'P', 'N', 'N'],
    r'I', 'A', 'C', 'H', 'A', 'M', 'P', 'I', 'O', 'N', 'Y', 'A', 'I', 'J', 'N', 'S', 'K', 'D', 'J'],
    r'V', 'G', 'N', 'I', 'N', 'O', 'O', 'K', 'W', 'R', 'R', 'H', 'U', 'A', 'E', 'D', 'R', 'N', 'D'],
    r'I', 'N', 'I', 'I', 'T', 'R', 'E', 'P', 'R', 'E', 'V', 'A', 'I', 'L', 'J', 'N', 'A', 'A', 'J'],
    r'C', 'U', 'A', 'V', 'K', 'A', 'A', 'T', 'A', 'G', 'P', 'C', 'A', 'O', 'H', 'I', 'M', 'L', 'F'],
    r'T', 'H', 'Z', 'U', 'V', 'J', 'O', 'G', 'O', 'V', 'E', 'R', 'C', 'O', 'M', 'E', 'N', 'G', 'O'],
    r'O', 'E', 'D', 'E', 'C', 'S', 'B', 'R', 'N', 'N', 'U', 'V', 'J', 'Z', 'T', 'E', 'E', 'N', 'R'],
    r'R', 'S', 'U', 'R', 'A', 'L', 'E', 'B', 'C', 'T', 'I', 'I', 'G', 'I', 'C', 'B', 'E', 'S', 'T'],
    r'Y', 'N', 'A', 'I', 'T', 'I', 'F', 'A', 'T', 'T', 'A', 'I', 'N', 'Y', 'W', 'I', 'M', 'E', 'I']];

var countrynames = n'ACCOMPLISH', 'ACHIEVE', 'ATTAIN', 'BEST', 'CHAMPION', 'OVERCOME', 'PREVAIL', 'SCORE', 'SUCCESS',
    'TRIUMPH', 'CAN', 'VICTORY', 'WINNER', 'ON', 'HIM', 'NOOK', 'IT', 'TAG',
    'FOR'];

function getRandom(arr, n) {
    var result = new Array(n),
        len = arr.length,
        taken = new Array(len);
    if (n > len)
        throw new RangeError("getRandom: more elements taken than available");
    while (n--) {
        var x = Math.floor(Math.random() * len);
        result n] = arrnx in taken ? taken x] : x];
        taken x] = --len in taken ? taken len] : len;
    }
    return result;
}

var wordnames = getRandom(countrynames, 19)

function storeScoreAndTimingInQualtrics() {
    var score = this.getScore();
    var timing = this.getTiming();
    var timing_str = timing.join(",") // Convert the timings separated by commas to a string
    Qualtrics.SurveyEngine.setEmbeddedData("wordsFound", score);
    Qualtrics.SurveyEngine.setEmbeddedData("timingWordsFound", timing_str);
	if(score == 19) {
	jQuery("#NextButton").show();
}
}

ws = new WordSearch({
        "grid": countrygrid, // Your grid to search
        "words": wordnames, // The list of words to find
        "parentId": "mysearchtask",
        "onFindWord": storeScoreAndTimingInQualtrics // When a word is found...
    });

I don’t think it will cause any issues. Since you have a Timing question that auto advances the page, the respondent will either find all 19 words and then be able to advance the page themselves, or they will be advanced by the Timing question. 

Hello! Thank you for your help and responses, they are greatly appreciated.

You’ve saved the day once again!