securely Synonyms

firmly with safety tight surely sure sturdily strongly stiffly steadily steadfastly staunchly stably tightly motionlessly enduringly unwaveringly unshakeably unflinchingly unconquerably tenaciously tautly reliably protectively harmlessly dependably soundly solidly solid fixedly firm FAST durably deeply confidently clear certainly certain cautiously fully hard immovably snugly security secure safely safe rigidly resolutely reliable permanently