rat
to reckon, think; reason
Latin · reri / ratio
Latin reri 'to reckon, think', past form ratus, and ratio 'reckoning, reason'. Rat words are about counting and reasoning: rate and ratio compare amounts, ration is a counted share, rational is reasonable.
Memory trick
RATional thinking RATes things: it counts, compares and reasons.
Words from this root
- rate (rat + e) — speed or price per unit; to judgeदर, रफ़्तार
- ratio (ratio) — comparison of two amountsअनुपात
- ration (ration) — a fixed share of suppliesराशन
- rational (ration + al) — reasonable, sensibleतर्कसंगत
- irrational (ir + rational) — not based on reasonतर्कहीन
- rationally (rational + ly) — in a sensible wayसमझदारी से
- rationality (rational + ity) — the quality of being reasonableतर्कसंगतता
- rationale (ration + ale) — the reason behind a decisionतर्काधार, औचित्य
- rationalization (rational + ization) — giving reasons for an actionतर्क द्वारा सही ठहराना
- ratify (rat + ify) — to approve officiallyअनुमोदन करना
- underrate (under + rate) — to value too lowकम आँकना
- overrate (over + rate) — to value too highज़्यादा आँकना