securely Synonyms

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