fundamental, key, essential, principal

fundamental, basic, essential, key, primary, organic, ultimate

key (Urdu)

hidden, secret, covert, low-key

hidden, secret, covert, low-key

focus; center (ie. of an infection); pocket; shelf, lock, bolt, block; fuse, detonator

lock (of hair), curl, bang (in hair); Fire! (command)

a lock of hair left with children as a vow or promise

to drive a wedge, split, cleave; to lock up in stocks

lock (of hair), curl, ringlet; banner, flag; stamen (botany)