The term 'grip tightly' can be expressed in a variety of ways. One way is to use the word 'CLUTCH, ' which has six letters and means to hold firmly. Another is 'CLASP, ' which has five letters and means to hold or fasten together. A third is 'CLENCH, ' which also has six letters and means to grip or hold tightly. A fourth is 'CLAMP, ' which has five letters and means to secure firmly. Lastly, 'holdfast' has eight letters and means to hold firmly or securely. All of these words express the idea of gripping something tightly.