Synonym: ahead, before, beginning, chief, dominant, foremost, leading, main, preferably, primary, principal, rather, final, finally, last. Similar words: at first, first of all, first prize, the first person, at first sight, in the first place, first and foremost, upstairs. Meaning: [fɜrst /fɜːst] 
n. 1. the first or highest in an ordering or series 2. the first element in a countable series 3. the time at which something is supposed to begin 4. the fielding position of the player on a baseball team who is stationed at first of the bases in the infield (counting counterclockwise from home plate) 5. an honours degree of the highest class 6. the lowest forward gear ratio in the gear box of a motor vehicle; used to start a car moving. adj. 1. preceding all others in time or space or degree 2. indicating the beginning unit in a series 3. serving to set in motion 4. serving to begin 5. ranking above all others 6. highest in pitch or chief among parts or voices or instruments or orchestra sections 7. being the gear producing the lowest drive speed. adv. 1. before anything else 2. the initial time 3. before another in time, space, or importance 4. prominently forward.
n. 1. the first or highest in an ordering or series 2. the first element in a countable series 3. the time at which something is supposed to begin 4. the fielding position of the player on a baseball team who is stationed at first of the bases in the infield (counting counterclockwise from home plate) 5. an honours degree of the highest class 6. the lowest forward gear ratio in the gear box of a motor vehicle; used to start a car moving. adj. 1. preceding all others in time or space or degree 2. indicating the beginning unit in a series 3. serving to set in motion 4. serving to begin 5. ranking above all others 6. highest in pitch or chief among parts or voices or instruments or orchestra sections 7. being the gear producing the lowest drive speed. adv. 1. before anything else 2. the initial time 3. before another in time, space, or importance 4. prominently forward. 91. He is in the first rank of university teachers.
92. Turn right at the first traffic light.
93. Under interrogation, he refused to say anything at first.
94. This is my first visit to New York.
95. Cathy was fined for her first offence.
96. The first English gold coin was struck in 1255.
97. You are not entitled to travel first class.
98. At first consumers were wary of e-banking.
99. She caught the first plane out.
100. First, you have to think logically about your fears.
101. The first station buildings were quite primitive.
102. Passengers with cars must embark first. Sentencedict.com
103. These events provided the inspiration for his first novel.
104. the first thing thatI'd like to do.
105. That was the first time for me.
106. First Airborne Division was heavily outgunned by German forces.
107. , the library is on the first floor.
108. Turn left at the first roundabout.
109. Her first impulse was to run away.
110. First, fold the paper in half / in two.
111. I spent most time on the first question.
112. As a first offender, he received a lenient sentence.
113. I am still amazed that she won first prize.
114. The woman first bought a few small articles.
115. Speech is learnt in the first years of life.
116. Turn right at the first crossroads.
117. You have to be first, best or different.
118. You have to turn it on first.
119. The first boats set off at dawn.
120. The baby's first front teeth are just coming through.
More similar words: at first, first of all, first prize, the first person, at first sight, in the first place, first and foremost, upstairs, firm, burst, at worst, on fire, fire up, firmly, burst in, confirm, burst into, understand, catch fire, set fire to, burst out laughing.